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Users Can Select Form-C 101 Basic Terms; Normal Relay Settings Define: Form-C Relay A single pole double throw (SPDT) relay is used to actuate the alarm status condition. The relay can switch one circuit (SP) and be placed in 1-of-2 positions (DT). The relay's "resting state" is the closed position; when no power is applied to the installed system controller. (MTS-Com) Define: Dry-Contact Term and use as Alarm Relays. The Majortel (MTS) relay contact surfaces do not contribute ...
