Features: Build in battery,providing long service time. It is a learning code wireless remote control switch (receiver), the output way / working way can be changed as you like, it is easy to match the transmitter. The wireless signal can pass through walls, floors and doors. You can turn on or turn off the receiver with transmitter(remote control) from any place within a reliable distance. Widely Used: Home appliances switch, lighting switch, wireless control products, switches, intelligent switches and other electronic equipment. Specification: Condition: 100% Brand New Material: ABS Color: Shown as Picture Frequency: 433Mhz Working Voltage: DC12-48V Standby Current: 10mA Working Current: 20mA-30mA Working Temperature: -20℃~80℃ /-4℉~176℉ Receive sensitivity: -103dBm Package Weight: Approx. 93g/3.3oz Learning Method: Self-locking: Press "Learn Button 1" twice and release, and press any one button on the remote control immediately, the indicator flashes 5 times quickly. It indicates the working mode of the first relay is "Self-locking". Press "Learn Button 2" and release, and repeat the above steps. Jog: Press "Learn Button 1" once and release, and press any one button on the remote control immediately, the indicator flashes 5 times quickly. It indicates the working mode of the first relay is "Jog". Press "Learn Button 2" and release, and repeat the above steps. Clear Code: Press The learn button until the indicator turns off. Package list: 1 * Transmitter 1 * Receiver 1、Build in battery,providing long service time. 2、It is a learning code wireless remote control switch (receiver), the output way / working way can be changed as you like, it is easy to match the transmitter. 3、The wireless signal can pass through walls, floors and doors. 4、You can turn on or turn off the receiver with transmitter(remote control) from any place within a reliable distance. 5、Widely Used: Home appliances switch, lighting switch, wireless control products, switches, intelligent switches and other electronic equipment.