Opener exit push button switch, WiFi 2.4G, Tuya and Smart Life app. Works with voice control Alexa & Google Assistant. Power supply DC12V. Works with remote 433MHz, add up to 10 (code 1170). Remote control distance 10-15 meters indoor. Working temp -10 to 70C. Size 86x86x15.5mm. Model cell was blank on the source sheet.