Description Key Finder Finder Finder / Car-Key Alarm Keychain / / high quality / Quantity: 1pcs / External material: / plastic / With this great / finder, find everything, only by one button / 1 transmitter / 4 receivers / Design: Wireless RF / Technology / Environment / Stable function / No radiation / Last long battery / and working distance / Receiver Powered by / CR2032 battery (not included), Transmitter Powered by 2 * AA battery (not / included) / This is a keychain / controller and 4 wireless receivers Super Key Electronic Anti-Lost Finder / Alarm keychain / The receiver is very small and light, very easy to attach to the keys / Size: Receiver: 4.7 /x3.4 x 0.7cm / Transmitter: 13 x 4.5 / x 1.1cm / Working range: 30-40 / meters (open space) / Sound: 75-80dB / Frequency: 433.92MHz / Locator keys up at 30 / meters (90 feet) through floors, walls, even sofa cushions / With control ur / and 4 wireless receivers to find 4 items / Keep the receiver You want to search / Easy and convenient to use / Use / How to use: / 1 Attach the receiver / color coded to your frequently lost items using the key / rings or double-sided tape / 2 Press the corresponding button and release the colored button on the / transmitter / 3 If the receiver is in the area / within reach (30m), it will beep and, at the same time, the LED will flash / 4 If no beep is heard / / change your location or use new batteries and press the key. button again / package include: / 1 / x transmitter / (without retail package) / 4 / x receivers / 1 x / manual /Products from WUZHOU 39;s store,