Title: Hardware Installation Guide.pdf
Two (2) Form-C contact relays are provided for controlling door lock mechanisms or alarm signaling. The relay contacts are rated at 5 Amp @ 30 VDC, dry contact configuration. Each relay has a Common pole (C), a Normally Open pole (NO) and a Normally Closed pole (NC). When you are controlling the delivery of power to the door strike, the Normally Open and Common poles are used. When you are momentarily removing power to unlock the door, as with a mag lock, the Normally Closed and Common poles are used. Check with local building codes for proper egress door installation. Check with local building codes for proper egress door installation.Inductive door locking devices may induce relay contact arcing as the contact opens that can cause damage and premature failure of the relay. For this reason, it is recommended that either a diode or MOV (metal oxide varistor) be used to protect the relay. Wire should be of sufficient gauge to avoid voltage loss.Note: