1、No Interference with Other Devices: RF receivers and transmitters work through doors and wall and do not interfere with other electronic devices. The signal works within a 20 meter line of sight. 2、One Hand in Control: With the option to pair multiple remote outlets together, you can expand your system so that all the devices in your home are accessible in the palm of your hand. 3、Professional Craftsmanship: Made of durable ABS material, it can withstand the effects of bad environmental and weather conditions for long life and professional craftsmanship for consistent performance. 4、Energy Saving: The outlet will stay off after power failure to save energy, save money on living or working, and defend your devices. 5、Scope of Application: Turn on and off your devices using the remote control or the outlet itself. Suitable for almost all electronic devices, including lights, heaters, sound systems, holiday decorations and charging devices. Item Type: Intelligent Wireless Remote Control Socket Model: TS 831 Material: ABS Signal Frequency: 433.92MHz Maximum Withstand Power: 1200W Remote Control Battery: 1 x L1028 alkaline batteries (shipped without batteries) 3 x Socket 1 x Remote Control 1 x Instruction Manual