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Name: 2020 Best Price 1 Key RF 433Mhz WIFI Remote Controller for Tuya Touch Switch
Model: PST-E1R
1 Key RF 433Mhz Remote Controller work with Smart Touch Switch
◆ Battery:27A/12V
◆ Wireless Frequency: 433Mhz
◆ Size:86*86*12mm
◆ Open distance: 30m;
◆ Color: White/Black/Gold, 
◆ Work with WF-E1,WF-E2,WF-E3,WF-U1,WF-U2,WF-U3,WF-U4;
◆ Can not work alone; 
◆ Directly stick on the wall. no need to make hole on the wall; 
Detailed Images
Specifications
User Manual
Youtube Video