Knowledge Base ›
Smart Meters
Official manufacturer
GLOBAL
verified Oct. 5, 2026
Identity
| brand |
Shelly
|
| category |
smart_meters
|
| manufacturer |
Shelly
|
| manufacturer_key |
shelly
|
| model |
Shelly Pro 3EM
|
| model_key |
shellypro3em
|
| product_family |
Pro 3EM
|
| product_key |
shelly/smart_meters/shellypro3em@GLOBAL
|
| product_status |
active
|
| region |
GLOBAL
|
| series |
Shelly Pro
|
Electrical
| ac_voltage_nominal_v |
230
|
| ac_voltage_range |
110 to 240 VAC per phase
|
| accuracy_class |
Class B (IEC 62053-21) active energy, 1% accuracy
|
| bidirectional_metering |
True
|
| frequency_hz |
50/60
|
| measurement_type |
Split-core current transformers (3x 120A included)
|
| onboard_data_logging |
60 days of 1-minute resolution onboard non-volatile memory
|
| phase_count |
3
|
| power_measurement |
Active power (W), reactive power (VAR), apparent power (VA), power factor, voltage (V), current (A)
|
| rated_current_a |
120
|
Physical / mechanical
| depth_mm |
59
|
| din_modules |
3
|
| enclosure_material |
Flame retardant plastic
|
| height_mm |
96
|
| mounting |
DIN-rail 35mm (DIN 43880)
|
| weight_g |
62
|
| width_mm |
53
|
Environment
| humidity_range |
30% to 70% RH non-condensing
|
| max_altitude_m |
2000
|
| operating_temperature_max_c |
40
|
| operating_temperature_min_c |
-20
|
Interfaces & connectors
| bluetooth |
True
|
| bluetooth_spec |
Bluetooth 4.2 BLE for local commissioning
|
| ethernet_rj45 |
True
|
| ethernet_spec |
10/100 Mbit/s RJ45 LAN port
|
| home_assistant |
True
|
| home_assistant_integration |
Official core Home Assistant native integration with mDNS / CoIoT / local RPC auto-discovery
|
| home_assistant_integration_type |
official_core
|
| modbus_tcp |
True
|
| modbus_tcp_spec |
Port 502 with full register map support
|
| mqtt |
True
|
| rest_api |
True
|
| rest_api_spec |
Local HTTP REST API and RPC over WebSockets
|
| wi_fi |
True
|
| wi_fi_spec |
802.11 b/g/n (2.4 GHz)
|
Protection
| internal_temperature_sensor |
True
|
| ip_rating |
IP20
|
| overheating_protection |
True
|
Certifications
| ce |
True
|
| standards |
IEC 62053-21, EN 50470-1, EN 50470-3
|