Dahua ARD313 Wired Plastic Door and Window Contact

Overview

The Dahua ARD313 is a wired magnetic door and window contact, also called a reed switch or door sensor. It has two parts, a switch body and a magnet, in white ABS plastic. When the door or window opens and the magnet moves away, the contact opens and the alarm panel sees the zone change. It is the basic detector for doors, windows, cupboards and hatches in a home, shop or office with a wired alarm panel, and it needs no power of its own.

Is it right for you?

• It suits wooden and uPVC frames on a wired alarm panel, or on a wireless input module.
• It is for non-metal frames. On a steel door or shutter the metal weakens the magnet’s field, so the metal ARD312 suits better.
• Operating range -10 to 50 °C.

Key features

• Normally closed (NC) contact output, the usual wiring for alarm zones.
• Operates when the gap between body and magnet exceeds 20 mm.
• Contact rating below 100 V DC and 500 mA.
• Surface mounting on the frame and the door leaf.
• Slim 63.5 x 12.5 x 12.5 mm body in white ABS plastic.
• Needs no power: it simply wires into a panel zone or input module.

What else you need

A wired alarm panel zone, such as on the Dahua ARC2008C-V3 or ARC2016C-V3, or an ARM808-RS input module, and alarm cable. For a wireless system, connect it to a wireless input transmitter such as the ARM310-W2.

Installation

An alarm installer can fit it, and a confident owner can manage a simple job. Screw the switch body to the frame and the magnet to the door leaf, aligned and with the gap under 20 mm when closed, then run the cable to the panel zone. A tamper loop is not stated by the manufacturer, so plan end-of-line resistor wiring at the panel if tamper supervision is needed.

Before you buy

• For non-metal frames; use the ARD312 on steel doors and shutters.
• A tamper loop is not stated by the manufacturer.