Smatrul Saklar RF433Mhz Black 2 Gang Smart Home Wireless Touch Switch Light Appliance RF 433Mhz Remote Control Glass Screen Wall Panel ASK Ev1257 | 2.022.0299 | WHC-B2 1, working voltage: DC 3V 2, working frequency: 433.92MHZ 3. Transmitting power: <10mW 4. Remote control distance: <50 meters (indoor distance) 5, working method: wireless remote control 6, coding method: learning code 7, modulation method: ASK 8, working temperature: -10 deg C ~ +70 deg C Pairing signal: 1. Press and hold the controller for 3 seconds to enter the code matching mode (the code indicator light flashes 5 times). At this time, press the wireless switch 2 times and wait for 2 seconds. The code is successful (the default is always on); clear the signal Press and hold the controller for 10 seconds to clear the code (the code indicator flashes 10 times);