No app needs to be installed; Just press the corresponding color button; A perfect helper for young mothers; Elderly and all workers 85 DB loud audio signal; You can hear it in the bedroom or in the living room; Ideal for interior, garden and yard 2 DIY stickers; Small icons for keys; Wallet; Etc. And custom text labels; Gives you a clear idea of the element corresponding to each button 6 key finders; 6 color coded receivers for key attachment; Wallet; Phone; Collars for dogs or other objects; Press the appropriate button to facilitate positioning Radio frequency technology; through the walls; Floor; Carpet; Leather; Wait a minute! Help you find objects up to 40 meters away Double-sided stickers and key rings; You can use a sticker to connect the key sensor to the TV remote or the key fob to connect it to the key ring Positioner dimensions: 48*33*6.9mm Package included: 1 x Transmitter 6 x Receiver 6 x Key Rings 6 x Hook and Loop Tape 7 x cr2032 button battery (installed) 1 x transmitter base 1 x black opening tool 1 x user manual