Description : 2-Channel Digital Wireless Remote Control Wall Switch Power FK-922A This product uses pairing coding， ultra high frequency encryption eliminates environmental interference. Remote control range is up to 50 meters， not obstructed by walls， capable of connecting any loads. Just a remote controller， you can easily control the electrical appliances at home. Specifications : Color : White with Silver Remote Range : 50M Power limit : !#!amp!*!lt;= 500W Input : AC 200V-240V (50-60Hz) Receive Size : 85 x 85 x 35mm (L x W x H) Controller Size : 94 x 43 x 14mm (L x W x H) Standard 86-type outer casing Remote control powered by one 23A\/12V battery (included) NOTE : For the indoor use only Package included : 1 x 2-Channel Remote Control with Holder 1 x Receiver Switch Box 1 x 23A\/12V battery Detailed pictures :