How to Use: All remote control socket units are preprogrammed and can be used immediately. To reprogram the remote control transmitter and socket receiver, follow the instructions below. 1. Plug the remote control socket into the power point, and then turn on the power. 2. Press and hold the learning button on the right or above the socket receiver for about 5 seconds until the LED flashes. 3. Release the learning button and press the preferred "on" or "off" number button of the transmitter. 4. When the LED indicator stops flashing, the programming is successful. 5. The remote control socket is now getting for use. 6. The remote setting only needs one time programming. Specification: Item Type: Wireless Remote Control Plug Material: ABS Plug: US Plug Voltage: 100-240V Temperature Range: -20-60℃ / -4-140℉ Frequency: 433MHz Remote Control Distance: >50m / 164ft Built in Button Battery in the Remote Control: 2 x CR2016(75mAh) (included) Package List: 1 x Smart Plug 1 x Remote Control