Frequency Distance: 20M-500M (please notice that is the ideal distance without any block and signal interfere , it would rise and fall about 10%-50% with the block and signal interference ). Features: Brand new and high quality. Easy and convenient your life, No longer Need to Put ON/OFF the usual electrical appliance Manually Built-in IR Infra-Red system, using the remote controller to control on and off Ideal for the remote operation of many electrical devices including TV, Radio, Fans, lamps, appliances, tools and more. How to use this item: Connected to power supply, click "code" key on the socket 3, Indicator, loosen the fingers. then press any key on remote control(If self- lock mode press the same key twice, if inter-lock model respectively press the two buttons 1 times), the indicator light will flash 3 times which shows that they are code successfully. This socket can learn 10 remote control with different password. Long click "Code" key for 20 seconds to delete remote. Specifications: Input voltage: AC 220V + / - 10%, 50 / 60 Hz Output voltage: AC 220V + / - 10%, 50 / 60 Hz Output power: 500W (Please Don't exceed load use) Applicable load: all sort of lamps and lanterns and household electrical power switch control Remote Distance: 10-100 meter (open) Effective distance: about 3M Operating frequency: 433MHz Plug Type: EU Package Included: A:1 x 220V AC Power Socket Adapter 1 x Remote control B:1 x 220V AC Power Socket Adapter 2 x Remote control C: 1 x 220V AC Power Socket Adapter