The Yale Stand Alone Alarms offer low cost security protection for homes, garages and sheds. No wires or mains power is required as each unit is powered by batteries. The Yale Door Contact Alarm P-SAA8012 should be door mounted and will sound the loud 100db siren when the magnetic door contact is broken.
Up to 3 sensor alarms can be linked together using Touch & Link technology with a wide range of up to 25 metres. Touch & Link works by simply touching the metal contacts of each device together.