Key Information

Single Phase 5A current transformer operated
MID Certified (B and D)
Bi-directional measurment for kW and kWh
Configurable pulsed output (Import, Export, Nett kWh)
RS485 Modbus or M-bus variants available
Multi parameter measurments
Simple set up and operation
featuring a CT clamp: 120A/40mA ratio.

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Sunsynk

Sunsynk - SDM120CT-M - Digital Meter (Single-Phase)

Regular price £134.06

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Sunsynk - SDM120CT-M - Digital Meter (Single-Phase)

Sunsynk SDM120CT-M Single-Phase Digital Meter (Eastron)

The Sunsynk SDM120CT-M (part number SUN-METER-E-1P) is a single-phase CT-operated digital meter manufactured by Eastron for use with Sunsynk inverter systems. MID certified (B and D), it provides bi-directional measurement of kW and kWh with RS485 Modbus communication. The meter includes a CT clamp with a 120 A / 40 mA ratio. This meter is used when the distance between the grid mains incomer and inverter exceeds 10 metres, extending the connection distance and ensuring accurate power readings. Available from DECO Group, a UK-based solar trade wholesaler.

Key Details

Part number: SUN-METER-E-1P
Supplier part number: E METER1
Model: Eastron SDM120CT-M
Type: Single-phase, 5 A CT-operated digital meter
MID certified: B and D
Measurement: Bi-directional kW and kWh
Pulsed output: Configurable (import, export, net kWh)
Communication: RS485 Modbus (M-bus variants also available)
CT clamp: 120 A / 40 mA ratio (included)
Multi-parameter measurements
Weight: 0.21 kg

Key Features

MID certified for accurate, certified energy measurement
Bi-directional measurement for import and export monitoring
RS485 Modbus communication for inverter integration
CT clamp included (120 A / 40 mA ratio)
Configurable pulsed output for import, export, or net kWh
Extends accurate power readings when inverter-to-incomer distance exceeds 10 metres

Compatibility

For use with Sunsynk single-phase inverter systems
The model must be SDM120CT with a CT clamp featuring a 120 A / 40 mA ratio; other Eastron meter models may produce inaccurate readings

Common Questions

Click a question below to reveal the answer.

When do I need this meter?

This meter is required when the distance between the grid mains incomer and the Sunsynk inverter exceeds 10 metres. At longer distances, the standard CT connection may produce inaccurate power readings; the Eastron meter extends the connection and ensures precise measurement.

Can I use a different Eastron meter model?

No. The model must be SDM120CT with a CT clamp featuring a 120 A / 40 mA ratio. Using any other Eastron meter model may result in inaccurate readings.

DECO Group supplies Sunsynk meters, inverters, batteries, and storage system accessories. Visit decogroup.co.uk for the full catalogue.