Feature:1. Do not operate with electricity, turn off the power to operate, and power on after the test is confirmed to be correct.2. When the remote control voltage is low, please replace the battery in time (when the remote control battery voltage is low, the remote control distance will generally become shorter).3. When using wireless electronic products, you should avoid strong interference sources, and avoid short distance between the remote control and the receiver or failure to work normally.4. Do not use this electronic product abnormally, it will reduce the performance and life of the product. In severe cases, it will damage the product and bring dangers to your safety.5. The shell made of highquality plastic and metal is wearresistant and durable, not easy to damage, and can be used for a long time.Specification:Item Type: Wireless Remote ControlMaterial: Plastic + MetalWeight: Approx. 27g/1ozWorking Voltage: DC3VWorking Current: <25maWorking Frequency: 433MHzTransmitting Power: +13dbmRemote Control Distance: Approx. 100m/328.1ftEncoding Format: 1527 EncodingWorking Environment: -15-75Chip: 117S ChipBattery: 1 x 210mAh CR2032 Button Battery (Battery Included) .Package List:1 x Wireless Remote ControlNote:1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3.For electrical maintenance and installation, be sure to ensure that the operator has electrical qualifications and take necessary power‑off and insulation protection measures.4. Need to be used with a controller.