Features: App Support: For iOS and for Android mobile App eWeLink. Sync Status: Real-time device status provided to App. Remote ON/OFF: Turn 4 electrical devices on/off remotely from anywhere. 3 Working Modes: Switch among interlock/self-locking/inching modes. Independent control: Control each gang separately in APP eWeLink. Supports remotely turn on or off connected appliances, for example light, electric kettle, electric rice cooker, electric curtain, etc. Use for 1.Remotely give a pulse signal to turn on/off Lights,Lamps and other home appliance. 2.Remotely give a pulse signal to turn on/off Garage Door,Door Access 3.Remotely give a pulse signal to control DC Motor,AC Motor to Forward and Reverse Parameters: lnput voltage: AC85-250V/USB5V or DC/AC 7V~32V/USB5V Max.Current:2000W /10A/gang Max.load:3500W / 16A/4gang Wireless:Wi-Fi 2.4ghz b/g/ n+Bluetooth Frequency radio:2.4G APP Remote Control: Just tap on eWweLink App to turn ona light anytime and anywhere. Color: White Material: ABS Different batches may have different printing screens, but it does not affect the use Package Contents: 1 x Smart Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.