AC220V input for the receiver. Press the Set button on the receiver until the LED indicator flashes, then press the button on the transmitter. When the LED indicator turns off, learning is successful. When pressing the down stop button, a relay sound will be heard. This controller is suitable for tubular motors. This controller does not include a limit switch terminal; compatible with tubular motors that have a built-in limit switch. Input voltage: AC220V. Frequency: 433 MHz. Material: Plastic. Color: White. Package includes: 1 x Receiver, 1 x Transmitter (with battery). Only the items listed are included; other accessories are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.