Wireless switch Specification:  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;  9, size: 86 * 86 *15 (mm);  10. use 1PC CR2032 Alkaline Battery ( Not Included Battery),The service life is about 12 months. Life and frequency of use are related. Time may be longer;  11.Color: White,1gang.     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).     NOTE:  1.One controller can be equipped with 15 switches, one switch can be equipped with many controllers.  2. Do not operate with power. Turn off the power supply and operate it. If the test is confirmed to be correct, use it under the guidance of a professional electrician.  3. When the voltage of the remote control is insufficient, please change the battery in time (the remote control distance becomes closer when the remote control battery voltage is insufficient).  4. When using wireless electronic products, care should be taken to avoid metal masks, large electronic devices, electromagnetic fields, etc., which have strong interference sources, to avoid remote control and short receiving distance or to work normally.  5. Do not use this electronic product abnormally. Abnormal use will reduce product performance and longevity. In severe cases, damage to the product will also pose a safety hazard.  Package includes:  1 x Wireless switch( White,1Gang; Not Included Controller).