D70NO is a 6 screw large surface contact complete with a leaf tamper switch. Of the included 6 wiring screws, 2 are used for the switch, 2 for the leaf tamper and the final 2 are left spare for any additional wiring.
The tamper switch on this contact will detect removal of the contact lid, meeting the requirements of Security Grade 2.
This contact is Normally Open (N/O) - The circuit through the contact is complete until the magnet is moved close by. With the magnet in close proximity, the circuit through the contact is broken.
Supplied with fitting screws.