Normally Open Surface Mount Contact

The Normally Open Surface Mount Contact is meant to be mounted on your doors or windows to let you know if they have been opened or not. You can actually use these sensors for normally open or normally closed.

There are three terminals because you choose the normally open terminal or the normally closed terminal when you install it.

This contact is called a Form C contact because the contact normally opens.This is also called an SPDT contact which stands for Single Pole Double Throw which also means that it can do both.

It has an internal reed switch with a contact rating of 100ma at 28VDC.

You will want to install the contact on the door jam or window sill and the magnet on the door or window.  It has a gap of 1″ so you do not have to get them super close or touching to work.

The Normally Open Surface Mount Contact used in a temperature range of -40°F to 194°F.

Included with the contact are spacers, covers, and mounting screws. The spacer will help you line it up if the door has a different depth than the door jam. The cover will help you cover the terminals, wire, and end of line resistor. You can mount the end of line resistor at the contact or at the control panel. (resistor not included) You can mount using the included screws or you can use adhesive tape, silicone or glue to attach the contact to the door or window.

Compatible with almost any hardwired security system like the safewatch pro 3000, concord, dsc powerseries, etc…

Magnetic Contact

• SPDT (Form C) Contact
• Standard gap: 1″ (25mm)
• Spaces, covers and screws included
• Cover conceals end of line resistor (EOL)

Specifications:

Switch Type: Form C (SPDT) Reed
Contact Rating: 100ma @ 28VDC

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