Knight Single Reed Large Tamper Contact with six rhodium terminals, case made of high impact polystyrene. It is 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 product is supplied with fitting screws.