ENGO E901-RF-UK Programmable Wireless Thermostat – 7-Day, 868MHz, Boiler Plus Compliant | Gas, Oil & Heat Pump
ENGO E901-RF-UK Programmable Wireless Thermostat – 7-Day, 868MHz, Boiler Plus Compliant | Gas, Oil & Heat Pump
The ENGO E901-RF-UK is a 7-day programmable wireless thermostat designed for UK central heating systems. Operating on 868 MHz RF technology with up to 100 m open-space range, it provides reliable, clutter-free boiler control for gas, oil, LPG, and heat pump systems — with no wiring required to the thermostat itself. Factory-paired with its receiver and Boiler Plus compliant, it's ideal for new installations and hassle-free upgrades.
Why Choose the ENGO E901-RF-UK?
Battery-powered thermostat communicates wirelessly to the mains receiver — place it anywhere, no cables needed.
Up to 6 time and temperature setpoints per day, every day of the week, for a fully personalised schedule.
Choose TPI for intelligent modulating control that reduces temperature overshoot, or classic hysteresis for simplicity.
Built-in TPI algorithm meets UK Boiler Plus regulations for new boiler installations — no extra devices needed.
2×AA alkaline batteries — no thermostat wiring required, easy to position anywhere in the room.
Reliable RF link even in large homes or thick-walled properties.
Configurable PIN lock prevents accidental or unauthorised setpoint changes — ideal for family homes and rentals.
Clean, minimal display with a hidden sliding panel that reveals programming buttons — keeps the room tidy.
Set an away temperature for holidays, or override the schedule with a temporary boost — both easily accessible.
Thermostat and receiver arrive already paired — unbox, fit the receiver, insert batteries, and it works.
Supplied with a freestanding desk stand so the thermostat can sit on a shelf without any wall fixings.
Backed by a full 5-year manufacturer's warranty for long-term confidence.
Suitable For
About the E901-RF-UK
The E901-RF is a two-part wireless thermostat system. The battery-powered thermostat head mounts on the wall or sits on its desk stand in a typical room location (ideally at around 1.5 m above floor level, away from heat sources and draughts). The mains receiver wires to the boiler's existing thermostat connections using a volt-free COM/NO output — a direct drop-in replacement for any standard wired room thermostat.
The E901-RF replaces any existing 2-wire wired room thermostat. Wire the receiver into the same terminals — typically marked T/T, TH, or Room Stat — on your boiler or programmer. No extra wiring is needed to the thermostat itself.
The 868 MHz RF link between thermostat and receiver uses unique factory-assigned transmission codes to prevent cross-interference with neighbours' devices. With a stated open-space range of up to 100 m, signal penetration through multiple internal walls is reliable in most domestic properties. The built-in super-capacitor in the transmitter sends a final "off" command to the receiver if battery power is lost, preventing the boiler from being left running unintentionally.
Since April 2018, all new boiler installations in England must be Boiler Plus compliant. The E901-RF satisfies this requirement through its built-in TPI (Time Proportional & Integral) control algorithm, which acts as a load compensator and improves boiler efficiency compared to a basic on/off thermostat. No additional controller or erp device is needed.
Programming is straightforward: the sliding panel reveals clearly labelled buttons for setting time, temperature and schedule. Three schedule types are available: a single programme applied to all 7 days, a 5+2 split (weekdays and weekend), or a fully independent 7-day schedule with up to 6 events per day. Factory programmes are also pre-loaded if you prefer a quick start.
Key Features
- 868 MHz RF wireless communication between thermostat and receiver
- Up to 100 m range in open space
- 7-day programmable — up to 6 events per day
- Battery-powered thermostat (2×AA alkaline, not included)
- Mains receiver: 230V AC 50Hz
- Volt-free NO/COM relay output — max load 16(5)A
- TPI control algorithm (Boiler Plus compliant)
- Hysteresis control mode (±0.2°C or ±2°C selectable)
- Temperature range: 5°C – 35°C
- Display accuracy: 0.5°C
- Heating / Cooling switchable mode
- Configurable min/max setpoint limits
- Programmable relay output type (NO / NC)
- Sliding function panel — buttons hidden when not in use
- PIN lock / child lock
- Holiday mode and temporary boost (party mode)
- Super-capacitor backup — sends OFF command on battery loss
- Factory pre-paired thermostat and receiver
- Desk stand and wall fixings included
- Unique transmission codes prevent cross-interference
- 5-year manufacturer's warranty
Technical Specifications
| Specification | Value |
|---|---|
| Model | E901-RF-UK |
| Communication | 868 MHz RF (868.0–868.6 MHz, <13 dBm) |
| Wireless Range | Up to 100 m (open space) |
| Thermostat Power | 2×AA 1.5V alkaline batteries (not included) |
| Receiver Power | 230V AC / 50Hz |
| Max Receiver Load | 16(5)A |
| Receiver Output | Volt-free NO/COM relay |
| Temperature Range | 5°C – 35°C |
| Display Accuracy | 0.5°C |
| Control Algorithm | TPI or Hysteresis (±0.2°C / ±2°C) |
| Schedule | 7-day, up to 6 events/day |
| Heating/Cooling | Yes (switchable) |
| Boiler Plus | Compliant (TPI load compensator) |
| PIN Lock | Yes |
| Wi-Fi / App Control | No (RF only — see E901-WIFI-UK for Wi-Fi version) |
| Thermostat Dimensions | 150 × 84 × 22 mm |
| Certification | 2014/53/EU, 2011/65/EU; UK compliant |
| Warranty | 5 years |
Installation Notes
The receiver wires to the boiler's existing room thermostat input terminals (volt-free COM/NO) using standard 2-core cable. Replace any existing wired dial thermostat by connecting the same 2 wires to the receiver. The thermostat head requires no wiring — insert batteries and mount using the included wall bracket or desk stand.
- Receiver: wire L, N to 230V supply; COM/NO output to boiler thermostat input
- OpenTherm: NOT supported — on/off control only
- Thermostat: mount at 1.5 m above floor, away from heat sources, draughts, and direct sunlight
- If the receiver and thermostat need re-pairing, follow the pairing procedure in the supplied manual
- Wiring must be carried out by a qualified person per BS 7671
Frequently Asked Questions
Is this the same as the E901-WIFI-UK?
No — the E901-RF-UK uses 868 MHz RF only with no Wi-Fi or app control. The E901-WIFI-UK adds a 2.4 GHz Wi-Fi module to the receiver for full app control via ENGO Smart, Alexa, and Google Assistant. See the E901-WIFI-UK listing if you want smart connectivity.
Does it work with my combi boiler?
Yes — the E901-RF-UK is compatible with any gas, oil, or LPG combi boiler that has a standard thermostat input (volt-free COM/NO). It also works with system boilers and heat pumps using on/off control.
Is it Boiler Plus compliant?
Yes — the built-in TPI algorithm acts as a load compensator, which satisfies the Boiler Plus requirement for new boiler installations in England (Part L, Building Regulations).
Do I need to pair the thermostat and receiver myself?
No — they arrive factory-paired. If you ever need to re-pair them (e.g. after a receiver replacement), the pairing process is described in the supplied manual and takes under 2 minutes.
Can I add more than one receiver?
Yes — additional ETR-868 relay receivers can be paired with the transmitter to extend control to multiple zones or locations.
Does the thermostat keep working if the batteries run low?
The built-in super-capacitor sends a final "off" command to the receiver when battery power drops, ensuring the boiler does not run indefinitely if the batteries are exhausted.
What's in the Box
- 1× E901-RF thermostat head (battery-powered)
- 1× Mains receiver (230V)
- Desk stand for thermostat
- Wall fixings for thermostat and receiver
- Full instruction manual
Note: 2×AA batteries not included.
Wiring must be carried out by a qualified person in accordance with BS 7671. OpenTherm not supported — on/off control only. For Wi-Fi and app control, see the E901-WIFI-UK.
Original: $89.08
-65%$89.08
$31.18More Images
ENGO E901-RF-UK Programmable Wireless Thermostat – 7-Day, 868MHz, Boiler Plus Compliant | Gas, Oil & Heat Pump
The ENGO E901-RF-UK is a 7-day programmable wireless thermostat designed for UK central heating systems. Operating on 868 MHz RF technology with up to 100 m open-space range, it provides reliable, clutter-free boiler control for gas, oil, LPG, and heat pump systems — with no wiring required to the thermostat itself. Factory-paired with its receiver and Boiler Plus compliant, it's ideal for new installations and hassle-free upgrades.
Why Choose the ENGO E901-RF-UK?
Battery-powered thermostat communicates wirelessly to the mains receiver — place it anywhere, no cables needed.
Up to 6 time and temperature setpoints per day, every day of the week, for a fully personalised schedule.
Choose TPI for intelligent modulating control that reduces temperature overshoot, or classic hysteresis for simplicity.
Built-in TPI algorithm meets UK Boiler Plus regulations for new boiler installations — no extra devices needed.
2×AA alkaline batteries — no thermostat wiring required, easy to position anywhere in the room.
Reliable RF link even in large homes or thick-walled properties.
Configurable PIN lock prevents accidental or unauthorised setpoint changes — ideal for family homes and rentals.
Clean, minimal display with a hidden sliding panel that reveals programming buttons — keeps the room tidy.
Set an away temperature for holidays, or override the schedule with a temporary boost — both easily accessible.
Thermostat and receiver arrive already paired — unbox, fit the receiver, insert batteries, and it works.
Supplied with a freestanding desk stand so the thermostat can sit on a shelf without any wall fixings.
Backed by a full 5-year manufacturer's warranty for long-term confidence.
Suitable For
About the E901-RF-UK
The E901-RF is a two-part wireless thermostat system. The battery-powered thermostat head mounts on the wall or sits on its desk stand in a typical room location (ideally at around 1.5 m above floor level, away from heat sources and draughts). The mains receiver wires to the boiler's existing thermostat connections using a volt-free COM/NO output — a direct drop-in replacement for any standard wired room thermostat.
The E901-RF replaces any existing 2-wire wired room thermostat. Wire the receiver into the same terminals — typically marked T/T, TH, or Room Stat — on your boiler or programmer. No extra wiring is needed to the thermostat itself.
The 868 MHz RF link between thermostat and receiver uses unique factory-assigned transmission codes to prevent cross-interference with neighbours' devices. With a stated open-space range of up to 100 m, signal penetration through multiple internal walls is reliable in most domestic properties. The built-in super-capacitor in the transmitter sends a final "off" command to the receiver if battery power is lost, preventing the boiler from being left running unintentionally.
Since April 2018, all new boiler installations in England must be Boiler Plus compliant. The E901-RF satisfies this requirement through its built-in TPI (Time Proportional & Integral) control algorithm, which acts as a load compensator and improves boiler efficiency compared to a basic on/off thermostat. No additional controller or erp device is needed.
Programming is straightforward: the sliding panel reveals clearly labelled buttons for setting time, temperature and schedule. Three schedule types are available: a single programme applied to all 7 days, a 5+2 split (weekdays and weekend), or a fully independent 7-day schedule with up to 6 events per day. Factory programmes are also pre-loaded if you prefer a quick start.
Key Features
- 868 MHz RF wireless communication between thermostat and receiver
- Up to 100 m range in open space
- 7-day programmable — up to 6 events per day
- Battery-powered thermostat (2×AA alkaline, not included)
- Mains receiver: 230V AC 50Hz
- Volt-free NO/COM relay output — max load 16(5)A
- TPI control algorithm (Boiler Plus compliant)
- Hysteresis control mode (±0.2°C or ±2°C selectable)
- Temperature range: 5°C – 35°C
- Display accuracy: 0.5°C
- Heating / Cooling switchable mode
- Configurable min/max setpoint limits
- Programmable relay output type (NO / NC)
- Sliding function panel — buttons hidden when not in use
- PIN lock / child lock
- Holiday mode and temporary boost (party mode)
- Super-capacitor backup — sends OFF command on battery loss
- Factory pre-paired thermostat and receiver
- Desk stand and wall fixings included
- Unique transmission codes prevent cross-interference
- 5-year manufacturer's warranty
Technical Specifications
| Specification | Value |
|---|---|
| Model | E901-RF-UK |
| Communication | 868 MHz RF (868.0–868.6 MHz, <13 dBm) |
| Wireless Range | Up to 100 m (open space) |
| Thermostat Power | 2×AA 1.5V alkaline batteries (not included) |
| Receiver Power | 230V AC / 50Hz |
| Max Receiver Load | 16(5)A |
| Receiver Output | Volt-free NO/COM relay |
| Temperature Range | 5°C – 35°C |
| Display Accuracy | 0.5°C |
| Control Algorithm | TPI or Hysteresis (±0.2°C / ±2°C) |
| Schedule | 7-day, up to 6 events/day |
| Heating/Cooling | Yes (switchable) |
| Boiler Plus | Compliant (TPI load compensator) |
| PIN Lock | Yes |
| Wi-Fi / App Control | No (RF only — see E901-WIFI-UK for Wi-Fi version) |
| Thermostat Dimensions | 150 × 84 × 22 mm |
| Certification | 2014/53/EU, 2011/65/EU; UK compliant |
| Warranty | 5 years |
Installation Notes
The receiver wires to the boiler's existing room thermostat input terminals (volt-free COM/NO) using standard 2-core cable. Replace any existing wired dial thermostat by connecting the same 2 wires to the receiver. The thermostat head requires no wiring — insert batteries and mount using the included wall bracket or desk stand.
- Receiver: wire L, N to 230V supply; COM/NO output to boiler thermostat input
- OpenTherm: NOT supported — on/off control only
- Thermostat: mount at 1.5 m above floor, away from heat sources, draughts, and direct sunlight
- If the receiver and thermostat need re-pairing, follow the pairing procedure in the supplied manual
- Wiring must be carried out by a qualified person per BS 7671
Frequently Asked Questions
Is this the same as the E901-WIFI-UK?
No — the E901-RF-UK uses 868 MHz RF only with no Wi-Fi or app control. The E901-WIFI-UK adds a 2.4 GHz Wi-Fi module to the receiver for full app control via ENGO Smart, Alexa, and Google Assistant. See the E901-WIFI-UK listing if you want smart connectivity.
Does it work with my combi boiler?
Yes — the E901-RF-UK is compatible with any gas, oil, or LPG combi boiler that has a standard thermostat input (volt-free COM/NO). It also works with system boilers and heat pumps using on/off control.
Is it Boiler Plus compliant?
Yes — the built-in TPI algorithm acts as a load compensator, which satisfies the Boiler Plus requirement for new boiler installations in England (Part L, Building Regulations).
Do I need to pair the thermostat and receiver myself?
No — they arrive factory-paired. If you ever need to re-pair them (e.g. after a receiver replacement), the pairing process is described in the supplied manual and takes under 2 minutes.
Can I add more than one receiver?
Yes — additional ETR-868 relay receivers can be paired with the transmitter to extend control to multiple zones or locations.
Does the thermostat keep working if the batteries run low?
The built-in super-capacitor sends a final "off" command to the receiver when battery power drops, ensuring the boiler does not run indefinitely if the batteries are exhausted.
What's in the Box
- 1× E901-RF thermostat head (battery-powered)
- 1× Mains receiver (230V)
- Desk stand for thermostat
- Wall fixings for thermostat and receiver
- Full instruction manual
Note: 2×AA batteries not included.
Wiring must be carried out by a qualified person in accordance with BS 7671. OpenTherm not supported — on/off control only. For Wi-Fi and app control, see the E901-WIFI-UK.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The ENGO E901-RF-UK is a 7-day programmable wireless thermostat designed for UK central heating systems. Operating on 868 MHz RF technology with up to 100 m open-space range, it provides reliable, clutter-free boiler control for gas, oil, LPG, and heat pump systems — with no wiring required to the thermostat itself. Factory-paired with its receiver and Boiler Plus compliant, it's ideal for new installations and hassle-free upgrades.
Why Choose the ENGO E901-RF-UK?
Battery-powered thermostat communicates wirelessly to the mains receiver — place it anywhere, no cables needed.
Up to 6 time and temperature setpoints per day, every day of the week, for a fully personalised schedule.
Choose TPI for intelligent modulating control that reduces temperature overshoot, or classic hysteresis for simplicity.
Built-in TPI algorithm meets UK Boiler Plus regulations for new boiler installations — no extra devices needed.
2×AA alkaline batteries — no thermostat wiring required, easy to position anywhere in the room.
Reliable RF link even in large homes or thick-walled properties.
Configurable PIN lock prevents accidental or unauthorised setpoint changes — ideal for family homes and rentals.
Clean, minimal display with a hidden sliding panel that reveals programming buttons — keeps the room tidy.
Set an away temperature for holidays, or override the schedule with a temporary boost — both easily accessible.
Thermostat and receiver arrive already paired — unbox, fit the receiver, insert batteries, and it works.
Supplied with a freestanding desk stand so the thermostat can sit on a shelf without any wall fixings.
Backed by a full 5-year manufacturer's warranty for long-term confidence.
Suitable For
About the E901-RF-UK
The E901-RF is a two-part wireless thermostat system. The battery-powered thermostat head mounts on the wall or sits on its desk stand in a typical room location (ideally at around 1.5 m above floor level, away from heat sources and draughts). The mains receiver wires to the boiler's existing thermostat connections using a volt-free COM/NO output — a direct drop-in replacement for any standard wired room thermostat.
The E901-RF replaces any existing 2-wire wired room thermostat. Wire the receiver into the same terminals — typically marked T/T, TH, or Room Stat — on your boiler or programmer. No extra wiring is needed to the thermostat itself.
The 868 MHz RF link between thermostat and receiver uses unique factory-assigned transmission codes to prevent cross-interference with neighbours' devices. With a stated open-space range of up to 100 m, signal penetration through multiple internal walls is reliable in most domestic properties. The built-in super-capacitor in the transmitter sends a final "off" command to the receiver if battery power is lost, preventing the boiler from being left running unintentionally.
Since April 2018, all new boiler installations in England must be Boiler Plus compliant. The E901-RF satisfies this requirement through its built-in TPI (Time Proportional & Integral) control algorithm, which acts as a load compensator and improves boiler efficiency compared to a basic on/off thermostat. No additional controller or erp device is needed.
Programming is straightforward: the sliding panel reveals clearly labelled buttons for setting time, temperature and schedule. Three schedule types are available: a single programme applied to all 7 days, a 5+2 split (weekdays and weekend), or a fully independent 7-day schedule with up to 6 events per day. Factory programmes are also pre-loaded if you prefer a quick start.
Key Features
- 868 MHz RF wireless communication between thermostat and receiver
- Up to 100 m range in open space
- 7-day programmable — up to 6 events per day
- Battery-powered thermostat (2×AA alkaline, not included)
- Mains receiver: 230V AC 50Hz
- Volt-free NO/COM relay output — max load 16(5)A
- TPI control algorithm (Boiler Plus compliant)
- Hysteresis control mode (±0.2°C or ±2°C selectable)
- Temperature range: 5°C – 35°C
- Display accuracy: 0.5°C
- Heating / Cooling switchable mode
- Configurable min/max setpoint limits
- Programmable relay output type (NO / NC)
- Sliding function panel — buttons hidden when not in use
- PIN lock / child lock
- Holiday mode and temporary boost (party mode)
- Super-capacitor backup — sends OFF command on battery loss
- Factory pre-paired thermostat and receiver
- Desk stand and wall fixings included
- Unique transmission codes prevent cross-interference
- 5-year manufacturer's warranty
Technical Specifications
| Specification | Value |
|---|---|
| Model | E901-RF-UK |
| Communication | 868 MHz RF (868.0–868.6 MHz, <13 dBm) |
| Wireless Range | Up to 100 m (open space) |
| Thermostat Power | 2×AA 1.5V alkaline batteries (not included) |
| Receiver Power | 230V AC / 50Hz |
| Max Receiver Load | 16(5)A |
| Receiver Output | Volt-free NO/COM relay |
| Temperature Range | 5°C – 35°C |
| Display Accuracy | 0.5°C |
| Control Algorithm | TPI or Hysteresis (±0.2°C / ±2°C) |
| Schedule | 7-day, up to 6 events/day |
| Heating/Cooling | Yes (switchable) |
| Boiler Plus | Compliant (TPI load compensator) |
| PIN Lock | Yes |
| Wi-Fi / App Control | No (RF only — see E901-WIFI-UK for Wi-Fi version) |
| Thermostat Dimensions | 150 × 84 × 22 mm |
| Certification | 2014/53/EU, 2011/65/EU; UK compliant |
| Warranty | 5 years |
Installation Notes
The receiver wires to the boiler's existing room thermostat input terminals (volt-free COM/NO) using standard 2-core cable. Replace any existing wired dial thermostat by connecting the same 2 wires to the receiver. The thermostat head requires no wiring — insert batteries and mount using the included wall bracket or desk stand.
- Receiver: wire L, N to 230V supply; COM/NO output to boiler thermostat input
- OpenTherm: NOT supported — on/off control only
- Thermostat: mount at 1.5 m above floor, away from heat sources, draughts, and direct sunlight
- If the receiver and thermostat need re-pairing, follow the pairing procedure in the supplied manual
- Wiring must be carried out by a qualified person per BS 7671
Frequently Asked Questions
Is this the same as the E901-WIFI-UK?
No — the E901-RF-UK uses 868 MHz RF only with no Wi-Fi or app control. The E901-WIFI-UK adds a 2.4 GHz Wi-Fi module to the receiver for full app control via ENGO Smart, Alexa, and Google Assistant. See the E901-WIFI-UK listing if you want smart connectivity.
Does it work with my combi boiler?
Yes — the E901-RF-UK is compatible with any gas, oil, or LPG combi boiler that has a standard thermostat input (volt-free COM/NO). It also works with system boilers and heat pumps using on/off control.
Is it Boiler Plus compliant?
Yes — the built-in TPI algorithm acts as a load compensator, which satisfies the Boiler Plus requirement for new boiler installations in England (Part L, Building Regulations).
Do I need to pair the thermostat and receiver myself?
No — they arrive factory-paired. If you ever need to re-pair them (e.g. after a receiver replacement), the pairing process is described in the supplied manual and takes under 2 minutes.
Can I add more than one receiver?
Yes — additional ETR-868 relay receivers can be paired with the transmitter to extend control to multiple zones or locations.
Does the thermostat keep working if the batteries run low?
The built-in super-capacitor sends a final "off" command to the receiver when battery power drops, ensuring the boiler does not run indefinitely if the batteries are exhausted.
What's in the Box
- 1× E901-RF thermostat head (battery-powered)
- 1× Mains receiver (230V)
- Desk stand for thermostat
- Wall fixings for thermostat and receiver
- Full instruction manual
Note: 2×AA batteries not included.
Wiring must be carried out by a qualified person in accordance with BS 7671. OpenTherm not supported — on/off control only. For Wi-Fi and app control, see the E901-WIFI-UK.
