pet lost prevention

Introduction :
The receiver remind the host by warning tone and vibration if transmitter is away from the receiver beyond the distance to set at your option.In order to protect your value thing lost and stolen. This products are suitable for the mobile,wallet, baggage, pets andyourkids,etc. 
Property:
Environmental protection function; noradiation.
Small size and portable
Convenient to use and freely set the distance
Adopt 256 code in order to the safe of your value things.