Anti Lost Alarm Card, Wallet Alarm - JD-FDK

JD-FDK: Anti Lost Alarm Card, Wallet Alarm


Features:
High sensitivity optical sensor.
Pocket sized, slim design
Built in micro-speaker.
Sensitivity control and battery replacement.
Simple, comfortable and various usage;

With 10 years experience in manufacturing Burglar Alarm Products, OEM and ODM are welcome too.