1: Multiple switches control one/multiple receivers simultaneously 2: Easy to install and easy to use.Install the wall switch anywhere you want.Easy to install and ready to adjust. 3: High receiving signal, receiving distance up to 50 meters. 4: The wireless remote control switch comes with a high-quality 27A12V battery, which can provide continuous power supply for 2 years. How to get the signal: Step 1: Press the learning button(on the Receiver) for2 times until the indicator light flashes. Step 2: Press one button on the remote control. Succeed. How to clear the signal: Only one step: Press the learning button(on the Receiver) 8 times. the code clearing is successful. Product Application Area: Products can be used in homes, farms, factories, offices, laboratories, supermarkets and so on Remote control Water pump / Fan / Lamp / LED light / bulb / ventilation device/ Electrical equipment / Factory Home Office Ventilation Pump LED Light working frequency: 433.92MHZ The total load power:Less than 1000W Maximum current: 10A Receiving sensitivity:-108dBM Working method: wireless remote contro Coding method: learning code Modulation method: ASK Working temperature: -10℃ - +70℃ Control distance:20-100m(in open area) Note: Installation guide not included, we strongly recommend you seek professional installation. Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches,The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color:As Shown Material:plastic Package Contents: 1 * Wireless remote control switch set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.