Eastron SDM Energy Monitor¶
The sdm_meter
sensor platform allows you to use Eastron SDM modbus energy monitors
(website)
with ESPHome.

SDM220M Energy Monitor.¶
The communication with this integration is done over a UART bus using the Modbus protocol
over RS485 wiring. You will need an RS485 to UART converter for communication.
You must therefore have a uart:
entry in your configuration with both the TX and RX pins set
to some pins on your board and the baud rate set to 9600.
# Example configuration entry
uart:
rx_pin: D1
tx_pin: D2
baud_rate: 9600
stop_bits: 1
sensor:
- platform: sdm_meter
phase_a:
current:
name: "SDM220M Current"
voltage:
name: "SDM220M Voltage"
active_power:
name: "SDM220M Power"
power_factor:
name: "SDM220M Power Factor"
apparent_power:
name: "SDM220M Apparent Power"
reactive_power:
name: "SDM220M Reactive Power"
phase_angle:
name: "SDM220M Phase Angle"
frequency:
name: "SDM220M Frequency"
total_power:
name: "SDM220M Total Power"
import_active_energy:
name: "SDM220M Import Active Energy"
export_active_energy:
name: "SDM220M Export Active Energy"
import_reactive_energy:
name: "SDM220M Import Reactive Energy"
export_reactive_energy:
name: "SDM220M Export Reactive Energy"
update_interval: 60s
Configuration variables:¶
phase_a (Optional): The group of exposed sensors for Phase A/1.
current (Optional): Use the current value of the sensor in amperes. All options from Sensor.
voltage (Optional): Use the voltage value of the sensor in volts (V). All options from Sensor.
active_power (Optional): Use the (active) power value of the sensor in watts (W). All options from Sensor.
power_factor (Optional): Use the power factor value of the sensor. All options from Sensor.
apparent_power (Optional): Use the apparent power value of the sensor in volt amps (VA). All options from Sensor.
reactive_power (Optional): Use the reactive power value of the sensor in volt amps reactive (VAR). All options from Sensor.
phase_angle (Optional): Use the phase angle value of the sensor in degrees (°). All options from Sensor.
phase_b (Optional): The group of exposed sensors for Phase B/2 on applicable meters. eg: SDM630
All options from phase_a
phase_c (Optional): The group of exposed sensors for Phase C/3 on applicable meters. eg: SDM630
All options from phase_a
frequency (Optional): Use the frequency value of the sensor in hertz. All options from Sensor.
total_power (Optional): Use the total power value of the sensor in watts (W). All options from Sensor.
import_active_energy (Optional): Use the import active energy value of the sensor in kilowatt hours (kWh). All options from Sensor.
export_active_energy (Optional): Use the export active energy value of the sensor in kilowatt hours (kWh). All options from Sensor.
import_reactive_energy (Optional): Use the import reactive energy value of the sensor in kilovolt amps reactive hours (kVArh). All options from Sensor.
export_reactive_energy (Optional): Use the export reactive energy value of the sensor in kilovolt amps reactive hours (kVArh). All options from Sensor.
update_interval (Optional, Time): The interval to check the sensor. Defaults to
60s
.address (Optional, int): The address of the sensor if multiple sensors are attached to the same UART bus. You will need to set the address of each device manually. Defaults to
1
.