Features: for Smart life tuya app wifi remote & 433Mhz RF remote switch 4-channel relay module, zigbee protocol. Easy to configure to for smart life app, AC/for DC 7-32V or USB 5V working voltage. After configuring with tuya for smart life app, when the WIFI connection is disconnected, you can use the Bluetooth-compatible remote control or 433mhz radio frequency control, support fixing code 433mhz RF. Widely applications, such as for light, electric kettle, garage door, sliding door, electric motor lock, curtain, access control, etc. tuya for smart life app controlled devices. for Amazon Alexa/Googles Home voice control, just use voice command to DIY control your eletric garage door light when you are not present. Specifications: Product Name: 4CH RF for Smart Switch Module Model: ZG-003-RF Input: AC for DC 7-32V USB 5V Max Load: 10A/Gang.16A/Total Wireless Standard: Zigbee Maximum Power: 2200W /10A Wireless Standard: 2.4GHz b/g/n Radio Frequency: 433Mhz Working Temperature: -20 - 70 Material: Plastic Color:White Size: Approx. 8.1x7.6 for cm/3.18x2.99 inch 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. Package includes: 1x for Smart Switch Module