This device has no built-in relay

and light switches or any other device with limited space

000 Z-Wave devices​

A single-channel smart switch

Ethernet LAN data transfer rates

Shelly 3EM smarter Energiemesser Shelly Plug&Play This device has no built-inShelly 3 EM Monitor the consumption of any household appliances, circuits, and office equipment (lighting, power lines, security systems, heating and cooling, etc.) individually with three independent measurement channels up to 120 Amperes each one protection control (or load up to 10 Amperes) 365 days internal storage in case Wi Fi is unavailable Voltage measurement and configurable alarm notifications Includes 3x current transformers 120 Amperes WHY