PB-68 door sensor
The product from PGST is a multi-functional device that serves as a security button and door sensor. PB-68 consumes very little energy and is very easy to install.
How it works
The sensor has a magnetic strip that detects intrusion. When the relay is away from the magnetic strip, then the alarm will sound. You will use the PGST brand product not only at home, but also at the store, warehouse, bank, company, etc.
|Working voltage||DC 3V|
|Emission distance||≥120M（open space）|