Dahua ARD1112C Wired Ceiling PIR Motion Detector

Overview

The Dahua ARD1112C is a wired motion detector that mounts on the ceiling and looks straight down over a full 360 degree circle. Because it does not look across the room from a wall, shelves, racking and furniture do not create blind spots. It suits open-plan offices, shop floors, showrooms, lobbies and halls, and rooms where the walls are taken by windows or glass.

Is it right for you?

• Choose it for open floors, showrooms, lobbies, halls and rooms with glass or racking on the walls.
• Coverage depends on ceiling height: a 7 m circle at 2.5 m, a 12 m circle at 3.6 m. Plan positions from those figures.
• For a narrow corridor or a single row of windows, a wall-mounted or curtain detector covers the shape better.
• No pet immunity is stated, so it may not suit a space where pets roam while the alarm is set.

Key features

• 360 degree coverage: 7 m diameter at 2.5 m ceiling height, 12 m diameter at 3.6 m.
• Dual-element low-noise pyroelectric sensor with adjustable sensitivity.
• 1P or 2P pulse count and two-way digital temperature compensation.
• White light resistance up to 6,500 lux.
• Alarm output normally closed (NC) or normally open (NO), 60 V DC, 400 mA, plus an NC tamper output rated 28 V DC, 100 mA.
• Low-profile white housing, 115 mm across and 33 mm deep, 96.3 g.
• 9 to 18 V DC supply, drawing 30 mA or less at 12 V DC.

What else you need

A wired alarm panel with a spare zone, such as the Dahua ARC2008C-V3 or ARC2016C-V3, powering the detector from its auxiliary output.

Alarm cable run through the ceiling for power, the alarm output and the tamper output.

Installation

An alarm installer should fit it. The cable runs through the ceiling and the tamper loop should be wired so the panel reports any interference.

Position each detector from the 2.5 m and 3.6 m coverage figures, overlapping circles on a large floor.

Before you buy

Indoor use only, from -10 to 55 °C and up to 95% humidity.

Ceilings higher than 3.6 m are outside the stated coverage figures.