Intrusion Detection Devices
The 2700 Series High Security & Specialty High Security Contacts with triple-biased reeds are highly resistant to defeat by external magnets. Standard features include Triple biased for increased security- UL listed.Also For Very EXTREME RISKS Explosion Proof Contacts are recommended-sentrol-2700-series-ge-magnetic-contacts.pdf
Grade 3 & 4 GE SECURITY Sensors.motiondetbrochure_en.pdf
Grading Paper grading-alarms-and-sensors.pdf