Eastron SDM120DB-MID Single-Phase DIN Rail Energy Meter with Backlit LCD Display
The Eastron SDM120DB-MID is a compact, MID-certified single-phase energy meter built for accurate, billing-grade kWh measurement in residential, commercial, and light industrial settings. Housed in a slim 1-module (18 mm) DIN rail enclosure, it clips neatly into any standard distribution board and begins logging consumption immediately — no configuration software required for basic use. The backlit LCD display distinguishes the SDM120DB from the plain SDM120D, giving clear readings even in dimly lit consumer units. A 1000 imp/kWh pulse output enables straightforward integration with external energy management systems, data loggers, or pulse counters, making this meter equally at home as a standalone sub-meter or as a node in a larger monitoring network.
Installation must be carried out by a qualified electrician. Always isolate the circuit before connecting or disconnecting the meter. Never operate with the terminal cover removed. Do not connect this meter to a three-phase 400 V network — it is rated for single-phase 230 V AC only. Observe polarity on the pulse output (5–27 V DC, max 27 mA opto-coupler).
The SDM120DB-MID carries MID (Measuring Instruments Directive) B+D certification under EU Directive 2014/32/EU (certificate number 0120/SGS0141), recognised in the UK. This means the meter is legally approved for energy billing, tenant sub-metering, feed-in monitoring, and any application where measured energy data has commercial or contractual significance. Sealable terminal covers are supplied to prevent tampering and preserve legal traceability.
This is a direct-connected meter rated to 45 A. It is not suitable for higher-current circuits — for loads above 45 A, a current-transformer (CT) operated variant such as the SDM120CT-Modbus is required. The pulse output requires an external DC supply (5–27 V DC); it is not self-powered. If remote data logging via RS485 Modbus or M-Bus is needed, consider the SDM120-Modbus or SDM120-MBus variants instead.
The white-backlit LCD screen provides clear, easy-to-read figures in any lighting condition — ideal for consumer units in cupboards, lofts, or plant rooms. Scroll through readings using the front-panel button: total kWh, import kWh, export kWh, voltage, current, active power, frequency, and power factor are all accessible.
Class 1 / Class B accuracy certified to IEC 62053-21 and EN 50470-3. Active energy measurement error is within ±1% across the rated operating range. This billing-grade precision satisfies UK and EU metering regulations for landlord–tenant sub-billing, EV charge point metering, and solar generation monitoring.
A fixed-rate opto-isolated pulse output at 1000 impulses per kWh allows the meter to feed data to energy management systems, building management controllers, Raspberry Pi loggers, or any pulse-counting device. The LED pulse indicator also flashes in real time — faster consumption, faster flash — giving instant visual feedback on load level.
At just 18 mm wide, the SDM120DB occupies only a single module slot on a standard 35 mm DIN rail — the same footprint as a single MCB. This makes it easy to retrofit into existing distribution boards without expanding the enclosure, and allows multiple meters to be installed side by side for multi-circuit sub-metering.
Sealable terminal covers are supplied as standard, preventing unauthorised access to wiring connections and maintaining the integrity of the MID certification. The self-extinguishing UL94V0-rated enclosure provides additional fire safety. The meter carries Protective Class II double-insulated construction.
Suited to residential sub-metering, EV charger energy measurement, solar PV generation monitoring, outbuilding supplies, office landlord billing, and light commercial circuits. The SDM120DB measures both import and export kWh, making it particularly useful where solar generation or battery storage creates bi-directional energy flows on a single-phase circuit.
| Parameter | Value / Detail |
|---|---|
| Model | SDM120DB-MID |
| Phases | Single-phase, two-wire |
| Nominal Voltage (Uₙ) | 230 V AC (120 V AC version also available) |
| Operational Voltage Range | 80%–120% of Uₙ |
| Basic Current (Iᵦ) | 5 A |
| Maximum Rated Current (Imax) | 45 A (direct connected) |
| Starting Current | 0.4% of Iᵦ |
| Frequency | 50 Hz / 60 Hz |
| Accuracy Class | Class 1 (IEC 62053-21) / Class B (EN 50470-3) |
| Active Energy Accuracy | ±1% of range maximum |
| Voltage Accuracy | 0.5% of range maximum |
| Current Accuracy | 0.5% of nominal |
| Display | LCD with white backlight |
| Measured Parameters | Total kWh, import kWh, export kWh, voltage (V), current (A), active power (W), frequency (Hz), power factor |
| Max. Display Reading | 99,999.9 kWh |
| Pulse Output | 1000 imp/kWh, opto-isolated SPST-NO, 5–27 V DC, max 27 mA |
| Internal Power Consumption | ≤ 2 W / 10 VA |
| DIN Rail Width | 18 mm (1 module) |
| Dimensions (W × H × D) | 18 × 119 × 62 mm (per DIN 43880) |
| DIN Rail Mounting | 35 mm standard DIN rail |
| Ingress Protection | IP51 (indoor use) |
| Protective Class | Class II (double insulated) |
| Installation Category | CAT III |
| AC Voltage Withstand | 4 kV for 1 minute |
| Impulse Voltage Withstand | 6 kV (1.2 µs) |
| ESD | 8 kV contact / 15 kV air gap |
| Operating Temperature | −25°C to +55°C |
| Storage Temperature | −40°C to +70°C |
| Operating Humidity | ≤ 90% RH, non-condensing |
| Altitude | Up to 2000 m |
| Enclosure Material | Self-extinguishing UL94V0 |
| Terminal Cover | Sealable, supplied as standard |
| MID Certification | EN 50470-1 & EN 50470-3 Class B (certificate 0120/SGS0141) |
| EMC | EN 61326-1, EN 61326-2-3, IEC 61326-1:2013 |
| LVD | EN 61010-1, EN 61010-2-3 |
| International Standard | IEC 62053-21 / EN 50470-1 / EN 50470-3 |
| Warm-Up Time | 3 seconds |
| Manufacturer | Zhejiang Eastron Electronic Co., Ltd. |
Original: $47.24
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Eastron SDM120DB-MID Single-Phase DIN Rail Energy Meter with Backlit LCD Display
The Eastron SDM120DB-MID is a compact, MID-certified single-phase energy meter built for accurate, billing-grade kWh measurement in residential, commercial, and light industrial settings. Housed in a slim 1-module (18 mm) DIN rail enclosure, it clips neatly into any standard distribution board and begins logging consumption immediately — no configuration software required for basic use. The backlit LCD display distinguishes the SDM120DB from the plain SDM120D, giving clear readings even in dimly lit consumer units. A 1000 imp/kWh pulse output enables straightforward integration with external energy management systems, data loggers, or pulse counters, making this meter equally at home as a standalone sub-meter or as a node in a larger monitoring network.
Installation must be carried out by a qualified electrician. Always isolate the circuit before connecting or disconnecting the meter. Never operate with the terminal cover removed. Do not connect this meter to a three-phase 400 V network — it is rated for single-phase 230 V AC only. Observe polarity on the pulse output (5–27 V DC, max 27 mA opto-coupler).
The SDM120DB-MID carries MID (Measuring Instruments Directive) B+D certification under EU Directive 2014/32/EU (certificate number 0120/SGS0141), recognised in the UK. This means the meter is legally approved for energy billing, tenant sub-metering, feed-in monitoring, and any application where measured energy data has commercial or contractual significance. Sealable terminal covers are supplied to prevent tampering and preserve legal traceability.
This is a direct-connected meter rated to 45 A. It is not suitable for higher-current circuits — for loads above 45 A, a current-transformer (CT) operated variant such as the SDM120CT-Modbus is required. The pulse output requires an external DC supply (5–27 V DC); it is not self-powered. If remote data logging via RS485 Modbus or M-Bus is needed, consider the SDM120-Modbus or SDM120-MBus variants instead.
The white-backlit LCD screen provides clear, easy-to-read figures in any lighting condition — ideal for consumer units in cupboards, lofts, or plant rooms. Scroll through readings using the front-panel button: total kWh, import kWh, export kWh, voltage, current, active power, frequency, and power factor are all accessible.
Class 1 / Class B accuracy certified to IEC 62053-21 and EN 50470-3. Active energy measurement error is within ±1% across the rated operating range. This billing-grade precision satisfies UK and EU metering regulations for landlord–tenant sub-billing, EV charge point metering, and solar generation monitoring.
A fixed-rate opto-isolated pulse output at 1000 impulses per kWh allows the meter to feed data to energy management systems, building management controllers, Raspberry Pi loggers, or any pulse-counting device. The LED pulse indicator also flashes in real time — faster consumption, faster flash — giving instant visual feedback on load level.
At just 18 mm wide, the SDM120DB occupies only a single module slot on a standard 35 mm DIN rail — the same footprint as a single MCB. This makes it easy to retrofit into existing distribution boards without expanding the enclosure, and allows multiple meters to be installed side by side for multi-circuit sub-metering.
Sealable terminal covers are supplied as standard, preventing unauthorised access to wiring connections and maintaining the integrity of the MID certification. The self-extinguishing UL94V0-rated enclosure provides additional fire safety. The meter carries Protective Class II double-insulated construction.
Suited to residential sub-metering, EV charger energy measurement, solar PV generation monitoring, outbuilding supplies, office landlord billing, and light commercial circuits. The SDM120DB measures both import and export kWh, making it particularly useful where solar generation or battery storage creates bi-directional energy flows on a single-phase circuit.
| Parameter | Value / Detail |
|---|---|
| Model | SDM120DB-MID |
| Phases | Single-phase, two-wire |
| Nominal Voltage (Uₙ) | 230 V AC (120 V AC version also available) |
| Operational Voltage Range | 80%–120% of Uₙ |
| Basic Current (Iᵦ) | 5 A |
| Maximum Rated Current (Imax) | 45 A (direct connected) |
| Starting Current | 0.4% of Iᵦ |
| Frequency | 50 Hz / 60 Hz |
| Accuracy Class | Class 1 (IEC 62053-21) / Class B (EN 50470-3) |
| Active Energy Accuracy | ±1% of range maximum |
| Voltage Accuracy | 0.5% of range maximum |
| Current Accuracy | 0.5% of nominal |
| Display | LCD with white backlight |
| Measured Parameters | Total kWh, import kWh, export kWh, voltage (V), current (A), active power (W), frequency (Hz), power factor |
| Max. Display Reading | 99,999.9 kWh |
| Pulse Output | 1000 imp/kWh, opto-isolated SPST-NO, 5–27 V DC, max 27 mA |
| Internal Power Consumption | ≤ 2 W / 10 VA |
| DIN Rail Width | 18 mm (1 module) |
| Dimensions (W × H × D) | 18 × 119 × 62 mm (per DIN 43880) |
| DIN Rail Mounting | 35 mm standard DIN rail |
| Ingress Protection | IP51 (indoor use) |
| Protective Class | Class II (double insulated) |
| Installation Category | CAT III |
| AC Voltage Withstand | 4 kV for 1 minute |
| Impulse Voltage Withstand | 6 kV (1.2 µs) |
| ESD | 8 kV contact / 15 kV air gap |
| Operating Temperature | −25°C to +55°C |
| Storage Temperature | −40°C to +70°C |
| Operating Humidity | ≤ 90% RH, non-condensing |
| Altitude | Up to 2000 m |
| Enclosure Material | Self-extinguishing UL94V0 |
| Terminal Cover | Sealable, supplied as standard |
| MID Certification | EN 50470-1 & EN 50470-3 Class B (certificate 0120/SGS0141) |
| EMC | EN 61326-1, EN 61326-2-3, IEC 61326-1:2013 |
| LVD | EN 61010-1, EN 61010-2-3 |
| International Standard | IEC 62053-21 / EN 50470-1 / EN 50470-3 |
| Warm-Up Time | 3 seconds |
| Manufacturer | Zhejiang Eastron Electronic Co., Ltd. |
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Description
The Eastron SDM120DB-MID is a compact, MID-certified single-phase energy meter built for accurate, billing-grade kWh measurement in residential, commercial, and light industrial settings. Housed in a slim 1-module (18 mm) DIN rail enclosure, it clips neatly into any standard distribution board and begins logging consumption immediately — no configuration software required for basic use. The backlit LCD display distinguishes the SDM120DB from the plain SDM120D, giving clear readings even in dimly lit consumer units. A 1000 imp/kWh pulse output enables straightforward integration with external energy management systems, data loggers, or pulse counters, making this meter equally at home as a standalone sub-meter or as a node in a larger monitoring network.
Installation must be carried out by a qualified electrician. Always isolate the circuit before connecting or disconnecting the meter. Never operate with the terminal cover removed. Do not connect this meter to a three-phase 400 V network — it is rated for single-phase 230 V AC only. Observe polarity on the pulse output (5–27 V DC, max 27 mA opto-coupler).
The SDM120DB-MID carries MID (Measuring Instruments Directive) B+D certification under EU Directive 2014/32/EU (certificate number 0120/SGS0141), recognised in the UK. This means the meter is legally approved for energy billing, tenant sub-metering, feed-in monitoring, and any application where measured energy data has commercial or contractual significance. Sealable terminal covers are supplied to prevent tampering and preserve legal traceability.
This is a direct-connected meter rated to 45 A. It is not suitable for higher-current circuits — for loads above 45 A, a current-transformer (CT) operated variant such as the SDM120CT-Modbus is required. The pulse output requires an external DC supply (5–27 V DC); it is not self-powered. If remote data logging via RS485 Modbus or M-Bus is needed, consider the SDM120-Modbus or SDM120-MBus variants instead.
The white-backlit LCD screen provides clear, easy-to-read figures in any lighting condition — ideal for consumer units in cupboards, lofts, or plant rooms. Scroll through readings using the front-panel button: total kWh, import kWh, export kWh, voltage, current, active power, frequency, and power factor are all accessible.
Class 1 / Class B accuracy certified to IEC 62053-21 and EN 50470-3. Active energy measurement error is within ±1% across the rated operating range. This billing-grade precision satisfies UK and EU metering regulations for landlord–tenant sub-billing, EV charge point metering, and solar generation monitoring.
A fixed-rate opto-isolated pulse output at 1000 impulses per kWh allows the meter to feed data to energy management systems, building management controllers, Raspberry Pi loggers, or any pulse-counting device. The LED pulse indicator also flashes in real time — faster consumption, faster flash — giving instant visual feedback on load level.
At just 18 mm wide, the SDM120DB occupies only a single module slot on a standard 35 mm DIN rail — the same footprint as a single MCB. This makes it easy to retrofit into existing distribution boards without expanding the enclosure, and allows multiple meters to be installed side by side for multi-circuit sub-metering.
Sealable terminal covers are supplied as standard, preventing unauthorised access to wiring connections and maintaining the integrity of the MID certification. The self-extinguishing UL94V0-rated enclosure provides additional fire safety. The meter carries Protective Class II double-insulated construction.
Suited to residential sub-metering, EV charger energy measurement, solar PV generation monitoring, outbuilding supplies, office landlord billing, and light commercial circuits. The SDM120DB measures both import and export kWh, making it particularly useful where solar generation or battery storage creates bi-directional energy flows on a single-phase circuit.
| Parameter | Value / Detail |
|---|---|
| Model | SDM120DB-MID |
| Phases | Single-phase, two-wire |
| Nominal Voltage (Uₙ) | 230 V AC (120 V AC version also available) |
| Operational Voltage Range | 80%–120% of Uₙ |
| Basic Current (Iᵦ) | 5 A |
| Maximum Rated Current (Imax) | 45 A (direct connected) |
| Starting Current | 0.4% of Iᵦ |
| Frequency | 50 Hz / 60 Hz |
| Accuracy Class | Class 1 (IEC 62053-21) / Class B (EN 50470-3) |
| Active Energy Accuracy | ±1% of range maximum |
| Voltage Accuracy | 0.5% of range maximum |
| Current Accuracy | 0.5% of nominal |
| Display | LCD with white backlight |
| Measured Parameters | Total kWh, import kWh, export kWh, voltage (V), current (A), active power (W), frequency (Hz), power factor |
| Max. Display Reading | 99,999.9 kWh |
| Pulse Output | 1000 imp/kWh, opto-isolated SPST-NO, 5–27 V DC, max 27 mA |
| Internal Power Consumption | ≤ 2 W / 10 VA |
| DIN Rail Width | 18 mm (1 module) |
| Dimensions (W × H × D) | 18 × 119 × 62 mm (per DIN 43880) |
| DIN Rail Mounting | 35 mm standard DIN rail |
| Ingress Protection | IP51 (indoor use) |
| Protective Class | Class II (double insulated) |
| Installation Category | CAT III |
| AC Voltage Withstand | 4 kV for 1 minute |
| Impulse Voltage Withstand | 6 kV (1.2 µs) |
| ESD | 8 kV contact / 15 kV air gap |
| Operating Temperature | −25°C to +55°C |
| Storage Temperature | −40°C to +70°C |
| Operating Humidity | ≤ 90% RH, non-condensing |
| Altitude | Up to 2000 m |
| Enclosure Material | Self-extinguishing UL94V0 |
| Terminal Cover | Sealable, supplied as standard |
| MID Certification | EN 50470-1 & EN 50470-3 Class B (certificate 0120/SGS0141) |
| EMC | EN 61326-1, EN 61326-2-3, IEC 61326-1:2013 |
| LVD | EN 61010-1, EN 61010-2-3 |
| International Standard | IEC 62053-21 / EN 50470-1 / EN 50470-3 |
| Warm-Up Time | 3 seconds |
| Manufacturer | Zhejiang Eastron Electronic Co., Ltd. |
