... &ROHS approval 2.Remote control item with3 receiver good for family use 3.Logo can be cust key finder with remote control ... One Romote control matches 3 receivers,which are good for family use.1) The receiver is very small and light,very easy ... (Battery included)Battery:1pc 27A 12VUsage:First step is Match:Use a pen or needle to turn on the 1st keychain ...