App Support: Free iOS and Android mobile app . Sync Status: Real-time device status provided to the app. Remote On/Off: Remotely turn on/off 4 electrical devices from anywhere. 3 Working mode: interlock/self-lock/jog mode switching. control: Control each gang separately in the Yiweilian APP. Supports remotely turning on or off connected electrical appliances, such as electric lights, electric kettles, rice cookers, electric curtains, etc. APP remote control Just tap the eWweLink app to turn on the lights anytime, anywhere. Due to different batches, there may be differences in product appearance, color, and text, which will not affect the use Parameter: Input voltage: DC/AC 7V~32V Maximum current: 2000W /10A/group Maximum load: 3500W / 16A/4gang Wireless: Wi-Fi 2.4ghz b/g+Bluetooth Radio frequency: 2.4G Working temperature: -20C~70C Remotely send out pulse signals to turn on/off , and other . Remotely give a pulse signal to open/close the garage door, access control Remotely give a pulse signal to control the forward and reverse rotation of DC motor and AC motor Colour:White Material:plastic Size:81 x 76 x 28mm Package Contents: 1 x Module with Case 1 x 2.4G Remote 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.