1、*Supports WiFi network. Supports numerous WiFi smart switches on one smart phone. 2、*Supports status tracking: device status timely provided to the Tuya. 3、*Supports remotely turn on or off connected appliances, for example light, electric kettle, electric rice cooker, electric curtain, etc. 4、*Supports single/repeat/countdown timing tasks to turn on/off at a specified time. 5、*Voice Control: Compatible perfectly with \"Amazon\" Alexa, for Home/Nest, IFTTT. 6、*Built-in BT module for fast connection. Specifications: Working voltage: USB 5V, DC7-32V Two input interfaces: Wiring input DC7-32V, USB DC5V Supports to control different voltage ranges USB port power supply more convenient RF Frequency: 433MHz Board consumption: <1W Standby current: 80mA 4 Channel Total Load: 16A/3500W Single Load: 10A/2000W Relay lifespan: ≥1000000 times Electrical insulation resistance: 100M Electric shock voltage: 1000V Relay maximum suction time: 15ms Relay maximum release time: 5ms Working mode: Inching /self-locking Wireless Standard: 2.4GHz, 802.11 b/g/n + BT Mobile App:for Tuya on for Android/for IOS Applicable occasions: smart home. Wifi control Controlled lines: 4 Enclosure Material: Fire-retardant ABS Operating temperature: -20 degrees to +70 degrees Operating Humidity 40% ~ 80% RH Item Size: 79*76*19 (mm) 1 * 4CH WIFI + BT Switch Module 1 * Remote Controller