Tuya WIFI Smart Circuit Breaker With Metering 1P 63A Rail DIN Smart Home Wirele Remote Control SmartLIfe Via Alexa Google Home Description: Wiring: Power must enter from the top and must be Live line Neutral Line (L N). Live line Live line (L L) cannot be used. Only the black button version has metering function, while the blue button version does not have metering function Featured functions with metering version (black button version): power metering, 1-63A adjustable, alarm&protection settings: temperature (40-150 ), overcurrent (1-63A), overvoltage (220-265V), undervoltage (76-240V), usage logs (switch logs, alarm logs, setting logs) Features without metering version (blue button version): Alarm&Protection: Temperature (factory default of 80 , cannot be set), usage log (switch log, setting log) Basic functions: APP remote control, voice control, status feedback, timing, countdown, power outage memory, home sharing, group function Specifications: Working voltage: 100-240V AC Rated current: 10A/16A/25A/32A/40A/50A/63A/1-63A adjustable (optional) Number of protection poles: 1P N (N pole continuously open) Control method: manual/remote APP Communication protocol: WIFI Wirele standard: Wi Fi IEEE802.11 b/g/n 2.4GHz Security mechanism: WPA PSK/WPA2 PSK APP platform: "smart life" APP, "tuya " APP Support voice speakers: Alexa, Google Home, Yandex Alice, Tmall Genie, Xiaodu, etc Package Included: Intelligent circuit breaker * 1, instruction manual * 1 Notes: Wiring: Power must enter from the top and must be Live line Neutral Line (L N). Live line Live line (L L) cannot be used. Only the black button version has metering function, while the blue button version does not have metering function