Features: WIFi control mode, no need to program, just download a APP to connect with wifi and control the cloud. RF mode , you can control the module board with RF433mhz remote controller. Remote status tracking function, such as for light, electric kettle, garage door, sliding door, electric motor lock, curtain, access control, etc., the device status is provided to Tuya/for Smart Life in for time. Supports max 8 enabled scheduled/countdown/loop timers for each device. for Alexa, suitable for Google Home. Specifications: Model: TYWB 4CH RF for Smart Switch Input: AC/for DC 7-32V/USB 5V Max Load: 10A/Gang, 16A/total WiFi: 2.4GHz b/g/n+Bluetooth-compatible Radio Frequency: 433MHz Material: Plastic Color: White Size: Approx. 75x73x20 mm/2.95x2.87x0.78 inch Package Includes: 1 Piece for Smart Switch note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.