Operating voltage: AC 90240V, 50/60 Hz. Wireless type: WiFi 2.4 GHz. Maximum wiring capacity: 10 mm2 on the power supply side and on the load side. Relay type: latching relay. It can carry large currents. Universal DIY smart switch modules: use the SY1 smart switch to convert conventional home devices to smart in under 10 minutes. This compact WiFi switch can turn a lamp, a fan, or an auxiliary heater into a networked device. App remote control: control your appliances via the Smart Life or Tuya apps. No distance or time restrictions. The Smart Life app can be downloaded from the App Store and Google Play. Voice control: compatible with Alexa and Google Assistant. Turn devices on or off by voice command. Hands operation with the SY1. Four timing modes: timer, countdown, cycle timing, and astronomical timing. Helps prevent leaving devices on. Set operating hours to fit your needs and save energy. Easy installation and wide usability: connect in under ten minutes. Simple wiring by pressing and inserting cables. Screws are easy to tighten or loosen with a screwdriver. Typical applications: upgrade a bedside lamp for voice or app control; automate a ceiling fan or desk lamp; schedule an auxiliary heater to operate at set times or with sunrise/sunset.