ANMA System Building

Identity

category	smart_meters
manufacturer	Eastron
model	SDM120CT-MV
product_status	active
region	GLOBAL

Electrical

accuracy_class	Class 1 (IEC 62053-21) / Class B (EN 50470-3)
baud_rate	1200bps~9600bps Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
bidirectional	True
bidirectional_metering	True
ct_secondary_current_a	0.1 A or 0.04 A (the meter also accepts a 100 mV voltage-output CT) Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
ct_secondary_options	100mV / 100mA / 40mA Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
display	LCD with backlit Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
ethernet_port_count	0 Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
local_modbus_available	True Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
max_current_a	100.0
measured_values	kWh, W, V, A, PF, Hz, demand Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
measurement_directions	bidirectional Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
measurement_system	1P2W Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
measurement_type	Current Transformer (CT)
meter_type	CT-operated single-phase multi-function DIN-rail energy meter with mV/mA CT inputs Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
modbus_address_range	1~247 Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
operating_voltage_range	80%~120% of Un Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
parity	None (default), Odd, Even Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
phase_count	1 Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
physical_interfaces	['RS485', 'pulse outputs'] Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
pulse_output_count	2 Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
rated_voltage_v	230 Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
response_time	<100 mS Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
stop_bits	1 or 2 Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
supported_ct_ratios	CT primary 1-9999 A, programmable Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
transmission_distance_m	1000 Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
voltage_rating_v	230.0

Physical / mechanical

form_factor	1 Module, 18 mm width Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
mounting	DIN-rail

Environment

operating_temperature_max_c	60.0
operating_temperature_min_c	-25.0

Interfaces & connectors

communication	RS485 Modbus RTU
documented_ports	[{'port_role': 'RS485', 'port_label_from_manual': 'RS485 Modbus', 'port_type': 'terminal', 'direction': 'bidirectional', 'electrical_domain': 'communication', 'quantity': 1, 'document': 0, 'page': 'Specifications', 'quote': 'Output \| 2 Pulse Output + RS485 Modbus; Communication Protocol \| RS485 MODBUS RTU'}, {'port_role': 'DIGITAL_OUT', 'port_label_from_manual': 'Pulse Output', 'port_type': 'terminal', 'direction': 'output', 'electrical_domain': 'communication', 'quantity': 2, 'document': 0, 'page': 'Specifications', 'quote': 'Output \| 2 Pulse Output + RS485 Modbus'}, {'port_role': 'CT', 'port_label_from_manual': 'CT input (mV/mA)', 'port_type': 'terminal', 'direction': 'input', 'electrical_domain': 'communication', 'quantity': 1, 'document': 0, 'page': 'Specifications', 'quote': 'Input - CT Secondary \| 100mV / 100mA / 40mA; Input - CT Primary \| 1-9999A'}]
protocols	['Modbus RTU'] Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter
rs485	True
wifi	False Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter

Documents

manual Eastron SDM120CT-MV User Manual V1.6

product_page Eastron SDM120CT-MV RS485 Modbus CT Type mV/mA input Single Phase Multi-function Energy Meter

Additional documented parameters

Recorded verbatim from the source; no schema field exists for these yet.

builder_completeness	partial
region_notes	Eastron's global English product page; 230 V rated. ANMA's existing Eastron records use region GLOBAL.
withheld:direct_current_max_a	"not applicable - CT-operated meter"
withheld:internet_required_for_operation	"not applicable - standalone meter"
withheld:max_connected_devices	"not applicable - end device"
withheld:rs485_port_count	1