Check the listing for details. Wireless Remote Control Delay Switch System 12V 1CH Transmitter&Receiver 433MHz. Condition: New. Listed at 8.95 USD. Features: 1. 100% Brand new and high quality2. Easy to install, equip with remote receiver module and box3. With a hook on the remote control sender4. Using learn code, stable and reliable5. The distance max up to 30 meters ( In an empty, undisturbed place)6. Don't need walk to open the door, you just press the button of the sender, then ok.7. Suitable for automatic door, window, lifting equipment, access entry, alarm system of industrial control and security etc. Specifications:Material: high quality plastic/ metal Max charge current: 10A Operating voltage: DC12V Working Temperature: -20 to +65 Channel: 1 The frequency of work:433MHzWorking mode:Self-locking, Jog,InterlockDelay setting:5s,10s,15s,20sRemote distance: ≦30 m Module size:30mm*35mm*18mm(L/W/H) Remote control Size: 58.5mm * 38.5mm * 14mm(L/W/H)Remote control power:1x 23A 12V alkaline battery（Batteries are not included. No battery goes with due to shiping policies） Weight:0.1kg Suitable for door: single door Learning to code: Jog: Press the code key once, the LED indicator of the control board flickers once, then the indicator lights are always on, press the remote control key, the control board indicator flickers three times, and the code is successful. Self-locking:Press the code key twice, the LED indicator of the control board flickers twice, then the indicator lights are always on, press the remote control key, the control board indicator flickers three times, and the code is successful. Interlock: Press the code key three times, the LED indicator of the control board flickers three times, then the indicator lights are always on, press the remote control key, the control board indicator flickers three times; Press another key of the remote control to learn. After three flashes of the LED indicator, the LDE lamp goes out and the code is checked successfully. Delay 5s:Press the code key four times,the LED indicator of the control board flickers four times,then the indicator lights are always on, press the remote control key,and the code is successful. Delay 10s:Press the code key five times,the LED indicator of the control board flickers five times,then the indicator lights are always on, press the remote control key,and the code is successful. Delay 15s:Press the code key six times,the LED indicator of the control board flickers six times,then the indicator lights are always on, press the remote control key,and the code is successful. Delay 20s:Press the code key seven times,the LED indicator of the control board flickers seven times,then the indicator lights are always on, press the remote control key,and the code is successful. RHOMBUS