What's Dry Contact Switch Module: The dry contact module is a versatile electrical switch that responds to external signals, controlling other electrical equipment. With no need to worry about directions or polarity during installation, simply the correct signal current and voltage levels are maintained. Convenient Voice Control: Just need simple voice commands to trigger the dry contact through / Home Assistant,turn on/off the device effortlessly and more conveniently. Enjoy your life. Why Choose Dry Contact Module: Compatible with mechanical reset switch and rocker switch,suitable for various mounting boxes. Neutral wire is required. APP Remote Control: Turn on/off the devices effortlessly from anywhere after connected the module to TuyaSmart/ Life APP. Timer Schedule: With flexible timer setting, you can trigger connected devices while saving ., Manufacturer: Vjsujehgy