1 RF transmitter (Remote Control) and 4 receivers for locating different items like keys, wallet, TV remote control ,glasses or other items that you need to find sometimes. 30-40m(98-131fts) transmitting range, so that you can locate the items easily at most of corners in your house. It is with strong signals even if through walls. With a docking base, It 's a good display for tea table, TV bench, bed, computer desk, or bookshelf. Easily and quickly to locate / find the lost items, by pressing on the related color buttons, the beep sound and LED flashes will lead you to find the lost items With LED flash light on the transmitter, it is extremely handy when you need to find something in the dark. Features: The smart key finder can help you locate the items which often get lost. Simply attach the receivers to your keys, wallet, purse, TV remote, glasses case, mobile phone, car keys or other articles you wouldn't want to lose and find them by pushing the button on remote, the beep sound and the LED flashes will lead you to find them even in the dark during the range of 30-40 meters. Specifications Size (transmitter):105×46×13 mm Size (receiver):50×36×11 mm Battery (for transmitter):2* AAA,1.5V batteries (NOT included); 1*CR2032 (for receiver, included) Sound:90~100Db (Open Space) Transmitting Range:30~40 meters Frequency: 433.92 MHz Housing material: ABS Note: 2 X AAA, 1.5V battery (for transmitter) is NOT included. Brand No Brand SKU 100265916_NP-1020541337