Personal kids children lost Alarm

Use this product on your luggage, purse, cell phone, pet and even your children, you may enjoy the safety and easement feeling, because you needn't to worry about all the above to be lost.
No radialization
256 codes
Warning tone & vibration to alarm
Freely set the distance from 0-25 meters
Transmitter current: 2mA
Receiver current: 5mA
Warning current: 70mA
Temperature: 5-70
Humidity: 90
Frequency: 433MHz