Salus RM-16A 16A Relay Module Smart Home Heating Zigbee 3.0 Flush Mount 230V
The Salus RM-16A is a compact 16 A relay module that extends the switching capability of Salus thermostats and wiring centres beyond their own relay ratings — rated at 16 A / 250 V AC (4,000 VA) and fitting inside a standard Ø60 mm flush back box or surface-mounted where no box is available. It acts as an intermediary relay: the thermostat or controller energises the RM-16A's input, and the RM-16A switches the high-current load (boiler, pump, electric UFH mat) safely.
The module provides three output terminals — NO (normally open), COM (common) and NC (normally closed) — for both voltage-free dry-contact and 230 V live-switching applications, covering the full range of boiler control types from standard gas boilers (which need volt-free NO/COM) to solid-fuel boilers (which typically need NC/COM) to direct 230 V pump and electric mat switching. In Salus iT600 / Smart Home systems, the RM-16A also acts as a Zigbee mesh repeater and can be triggered by app schedules or OneTouch automation rules.
Handles loads up to 16 A at 250 V AC (4,000 VA) — far beyond the 3–5 A relay outputs typically built into thermostats. Ideal for electric UFH mats, pumps and high-draw boiler controls that would otherwise overload the thermostat.
Three output terminals — Normally Open, Common and Normally Closed — cover every boiler and device wiring requirement: gas boilers (NO/COM), solid-fuel boilers (NC/COM) and direct load switching for 230 V devices.
Accepts both a voltage-free (dry contact) NO/COM input and a 230 V switched-live (SL) input — so it bridges a thermostat with a 230 V output relay to a boiler that requires a volt-free contact, without rewiring.
At just 47 × 47 × 20 mm, the RM-16A fits neatly inside any standard Ø60 mm flush wall box — completely hidden behind a blank plate. Alternatively it can be surface-mounted using the supplied bracket.
When installed in the Salus iT600 / Smart Home Zigbee network, the mains-powered RM-16A automatically acts as a Zigbee signal repeater, extending mesh coverage to battery-powered devices in difficult signal areas — the same benefit as adding an RE600 repeater, at no extra device cost.
The Zigbee variant can be scheduled in the Salus Premium Lite app and triggered by OneTouch rules — for example, activating a pump when a thermostat reaches a setpoint, or opening a gate relay at a defined time.
| Manufacturer | SALUS Controls (Computime Group) |
| Model | RM-16A |
| Type | Zigbee 3.0 flush-mount relay module |
| Max. switching current | 16 A |
| Max. switching voltage | 250 V AC |
| Max. switching power | 4,000 VA |
| Input options | Voltage-free NO/COM; 230 V AC switched-live (SL) |
| Output terminals | NO (normally open), COM (common), NC (normally closed) |
| Power supply (module) | 230 V AC, 50 Hz (L + N) |
| LED indication | Power and relay status |
| Connectivity | Zigbee 3.0 / 2.4 GHz |
| Zigbee mesh repeater | Yes — acts as mains-powered repeater |
| App & scheduling | Salus Premium Lite app; OneTouch automation |
| Mounting | Ø60 mm flush back box or surface mount |
| Module dimensions | 47 × 47 × 20 mm |
| Indoor installation only | Yes |
| Warranty | 5 years manufacturer |
When do I need an RM-16A in my system?
The most common reason is that the thermostat or wiring centre relay is rated too low for the device being switched. A solid-fuel boiler needs an NC/COM contact; a gas boiler may need a volt-free NO/COM when the thermostat only has a 230 V live relay; an electric UFH mat may draw more than the thermostat's 3 A output; or the wiring centre is trying to drive a pump alongside multiple actuators. The RM-16A solves all of these without rewiring the thermostat or controller.
What is the difference between NO and NC contacts?
NO (Normally Open): the contact is open when the relay is de-energised and closes when activated. Used for boilers and devices that should be off by default. NC (Normally Closed): the contact is closed when de-energised and opens when activated. Used for solid-fuel boilers and fail-safe devices that need to stay on unless commanded off. COM is the common terminal used with either.
Does it work as a repeater even when not actively switching?
Yes — as a mains-powered Zigbee device the RM-16A relays Zigbee signals continuously, regardless of whether its relay output is currently active. Placing one in a corridor or between floors improves mesh reliability for battery-powered TRVs and thermostats in the same building.
Will it fit in my existing back box?
The module is 47 × 47 × 20 mm and fits in any standard Ø60 mm or larger circular flush back box. It can also be installed in a standard 35 mm square back box or surface-mounted with the supplied bracket. Inside the box, a blank face plate covers the installation for a clean finish.
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Salus RM-16A 16A Relay Module Smart Home Heating Zigbee 3.0 Flush Mount 230V
The Salus RM-16A is a compact 16 A relay module that extends the switching capability of Salus thermostats and wiring centres beyond their own relay ratings — rated at 16 A / 250 V AC (4,000 VA) and fitting inside a standard Ø60 mm flush back box or surface-mounted where no box is available. It acts as an intermediary relay: the thermostat or controller energises the RM-16A's input, and the RM-16A switches the high-current load (boiler, pump, electric UFH mat) safely.
The module provides three output terminals — NO (normally open), COM (common) and NC (normally closed) — for both voltage-free dry-contact and 230 V live-switching applications, covering the full range of boiler control types from standard gas boilers (which need volt-free NO/COM) to solid-fuel boilers (which typically need NC/COM) to direct 230 V pump and electric mat switching. In Salus iT600 / Smart Home systems, the RM-16A also acts as a Zigbee mesh repeater and can be triggered by app schedules or OneTouch automation rules.
Handles loads up to 16 A at 250 V AC (4,000 VA) — far beyond the 3–5 A relay outputs typically built into thermostats. Ideal for electric UFH mats, pumps and high-draw boiler controls that would otherwise overload the thermostat.
Three output terminals — Normally Open, Common and Normally Closed — cover every boiler and device wiring requirement: gas boilers (NO/COM), solid-fuel boilers (NC/COM) and direct load switching for 230 V devices.
Accepts both a voltage-free (dry contact) NO/COM input and a 230 V switched-live (SL) input — so it bridges a thermostat with a 230 V output relay to a boiler that requires a volt-free contact, without rewiring.
At just 47 × 47 × 20 mm, the RM-16A fits neatly inside any standard Ø60 mm flush wall box — completely hidden behind a blank plate. Alternatively it can be surface-mounted using the supplied bracket.
When installed in the Salus iT600 / Smart Home Zigbee network, the mains-powered RM-16A automatically acts as a Zigbee signal repeater, extending mesh coverage to battery-powered devices in difficult signal areas — the same benefit as adding an RE600 repeater, at no extra device cost.
The Zigbee variant can be scheduled in the Salus Premium Lite app and triggered by OneTouch rules — for example, activating a pump when a thermostat reaches a setpoint, or opening a gate relay at a defined time.
| Manufacturer | SALUS Controls (Computime Group) |
| Model | RM-16A |
| Type | Zigbee 3.0 flush-mount relay module |
| Max. switching current | 16 A |
| Max. switching voltage | 250 V AC |
| Max. switching power | 4,000 VA |
| Input options | Voltage-free NO/COM; 230 V AC switched-live (SL) |
| Output terminals | NO (normally open), COM (common), NC (normally closed) |
| Power supply (module) | 230 V AC, 50 Hz (L + N) |
| LED indication | Power and relay status |
| Connectivity | Zigbee 3.0 / 2.4 GHz |
| Zigbee mesh repeater | Yes — acts as mains-powered repeater |
| App & scheduling | Salus Premium Lite app; OneTouch automation |
| Mounting | Ø60 mm flush back box or surface mount |
| Module dimensions | 47 × 47 × 20 mm |
| Indoor installation only | Yes |
| Warranty | 5 years manufacturer |
When do I need an RM-16A in my system?
The most common reason is that the thermostat or wiring centre relay is rated too low for the device being switched. A solid-fuel boiler needs an NC/COM contact; a gas boiler may need a volt-free NO/COM when the thermostat only has a 230 V live relay; an electric UFH mat may draw more than the thermostat's 3 A output; or the wiring centre is trying to drive a pump alongside multiple actuators. The RM-16A solves all of these without rewiring the thermostat or controller.
What is the difference between NO and NC contacts?
NO (Normally Open): the contact is open when the relay is de-energised and closes when activated. Used for boilers and devices that should be off by default. NC (Normally Closed): the contact is closed when de-energised and opens when activated. Used for solid-fuel boilers and fail-safe devices that need to stay on unless commanded off. COM is the common terminal used with either.
Does it work as a repeater even when not actively switching?
Yes — as a mains-powered Zigbee device the RM-16A relays Zigbee signals continuously, regardless of whether its relay output is currently active. Placing one in a corridor or between floors improves mesh reliability for battery-powered TRVs and thermostats in the same building.
Will it fit in my existing back box?
The module is 47 × 47 × 20 mm and fits in any standard Ø60 mm or larger circular flush back box. It can also be installed in a standard 35 mm square back box or surface-mounted with the supplied bracket. Inside the box, a blank face plate covers the installation for a clean finish.
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Description
The Salus RM-16A is a compact 16 A relay module that extends the switching capability of Salus thermostats and wiring centres beyond their own relay ratings — rated at 16 A / 250 V AC (4,000 VA) and fitting inside a standard Ø60 mm flush back box or surface-mounted where no box is available. It acts as an intermediary relay: the thermostat or controller energises the RM-16A's input, and the RM-16A switches the high-current load (boiler, pump, electric UFH mat) safely.
The module provides three output terminals — NO (normally open), COM (common) and NC (normally closed) — for both voltage-free dry-contact and 230 V live-switching applications, covering the full range of boiler control types from standard gas boilers (which need volt-free NO/COM) to solid-fuel boilers (which typically need NC/COM) to direct 230 V pump and electric mat switching. In Salus iT600 / Smart Home systems, the RM-16A also acts as a Zigbee mesh repeater and can be triggered by app schedules or OneTouch automation rules.
Handles loads up to 16 A at 250 V AC (4,000 VA) — far beyond the 3–5 A relay outputs typically built into thermostats. Ideal for electric UFH mats, pumps and high-draw boiler controls that would otherwise overload the thermostat.
Three output terminals — Normally Open, Common and Normally Closed — cover every boiler and device wiring requirement: gas boilers (NO/COM), solid-fuel boilers (NC/COM) and direct load switching for 230 V devices.
Accepts both a voltage-free (dry contact) NO/COM input and a 230 V switched-live (SL) input — so it bridges a thermostat with a 230 V output relay to a boiler that requires a volt-free contact, without rewiring.
At just 47 × 47 × 20 mm, the RM-16A fits neatly inside any standard Ø60 mm flush wall box — completely hidden behind a blank plate. Alternatively it can be surface-mounted using the supplied bracket.
When installed in the Salus iT600 / Smart Home Zigbee network, the mains-powered RM-16A automatically acts as a Zigbee signal repeater, extending mesh coverage to battery-powered devices in difficult signal areas — the same benefit as adding an RE600 repeater, at no extra device cost.
The Zigbee variant can be scheduled in the Salus Premium Lite app and triggered by OneTouch rules — for example, activating a pump when a thermostat reaches a setpoint, or opening a gate relay at a defined time.
| Manufacturer | SALUS Controls (Computime Group) |
| Model | RM-16A |
| Type | Zigbee 3.0 flush-mount relay module |
| Max. switching current | 16 A |
| Max. switching voltage | 250 V AC |
| Max. switching power | 4,000 VA |
| Input options | Voltage-free NO/COM; 230 V AC switched-live (SL) |
| Output terminals | NO (normally open), COM (common), NC (normally closed) |
| Power supply (module) | 230 V AC, 50 Hz (L + N) |
| LED indication | Power and relay status |
| Connectivity | Zigbee 3.0 / 2.4 GHz |
| Zigbee mesh repeater | Yes — acts as mains-powered repeater |
| App & scheduling | Salus Premium Lite app; OneTouch automation |
| Mounting | Ø60 mm flush back box or surface mount |
| Module dimensions | 47 × 47 × 20 mm |
| Indoor installation only | Yes |
| Warranty | 5 years manufacturer |
When do I need an RM-16A in my system?
The most common reason is that the thermostat or wiring centre relay is rated too low for the device being switched. A solid-fuel boiler needs an NC/COM contact; a gas boiler may need a volt-free NO/COM when the thermostat only has a 230 V live relay; an electric UFH mat may draw more than the thermostat's 3 A output; or the wiring centre is trying to drive a pump alongside multiple actuators. The RM-16A solves all of these without rewiring the thermostat or controller.
What is the difference between NO and NC contacts?
NO (Normally Open): the contact is open when the relay is de-energised and closes when activated. Used for boilers and devices that should be off by default. NC (Normally Closed): the contact is closed when de-energised and opens when activated. Used for solid-fuel boilers and fail-safe devices that need to stay on unless commanded off. COM is the common terminal used with either.
Does it work as a repeater even when not actively switching?
Yes — as a mains-powered Zigbee device the RM-16A relays Zigbee signals continuously, regardless of whether its relay output is currently active. Placing one in a corridor or between floors improves mesh reliability for battery-powered TRVs and thermostats in the same building.
Will it fit in my existing back box?
The module is 47 × 47 × 20 mm and fits in any standard Ø60 mm or larger circular flush back box. It can also be installed in a standard 35 mm square back box or surface-mounted with the supplied bracket. Inside the box, a blank face plate covers the installation for a clean finish.
