Anti lost alarm

Child protecting:

Tie the transmitter on the child, and receiver secured to the parent.
Set a safety distance, when the child is out of the safety distance, the receiver will beep and vibrate to remind the parent.

Article Protecting:
Tie the transmitter on the protege, and receiver secured to the owner.

Set a safety distance, when the protege is out of the safety distance, the receiver will beep and vibrate to remind the owner.

*No radialization
*256 codes
*Warning tone 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