Sonoff G1 is a GSM smart power switch that allows users to remotely turn on/off any connected appliances by Android and iOS app EWeLink via GPRS network.
Different from other Sonoff products that have to connect to WiFi or LAN, G1 supports to be inserted with a SIM card (GSM/GPRS:800/900/1800/1900MHz) and use the 2G GPRS network to control connected appliances. Users can apply the wireless switch to modern agriculture like greenhouse light control, watering machine, oxygen pump. They can also apply the smart switch to pet feeding control, server room control, roller shutter, etc.
Please note: Please make sure your area has coverage with a stable 2G network signal.