Dahua ARD2251E-W2(V) Outdoor Triple-Tech Motion Detector with Camera

Overview

The Dahua ARD2251E-W2(V) is an outdoor wireless motion detector with a built-in camera. It detects intruders with passive infrared (PIR) and 24 GHz microwave sensing, then takes JPEG snapshots with infrared illumination and sends them to the hub, so you can see what set off the alarm before sending anyone. It suits villas, farmhouses, factory yards, building sites and remote sheds watched by a guard or a monitoring centre.

Is it right for you?

• Choose it where you want proof before acting: a farmhouse, villa, yard, building site or remote store.
• It works only with Dahua ARC3800H series hubs. It will not work with an ARC3000H kit.
• Pets up to about 40 kg and under 80 cm are ignored.
• If you do not need pictures, the ARD2251E-W2 is the same detector without the camera and runs longer on its batteries.

Key features

• PIR plus 24 GHz microwave detection across 90 degrees to 15 m when mounted at 1 m.
• Snapshots up to 1280 x 960 pixels with a 110 degree horizontal field of view.
• Infrared night illumination with colour and black-and-white switching.
• Anti-masking, movement detection and tamper alarm, so covering or removing the detector is reported.
• Pet immunity up to about 40 kg and 80 cm height; white light resistance up to 10,000 lux.
• IP66 housing in glass-filled polycarbonate, rated from -25 to 60 °C.
• Alarms over two-way 433 MHz radio to 1,200 m in open space; pictures over an RF-HD link to 1,000 m in open space.
• Four CR123A batteries, rated for about 5 years without camera use or 3.5 years with camera alarms twice a week.

What else you need

A Dahua ARC3800H series hub. The manufacturer lists this as the only compatible hub series.

The Dahua app, where snapshots are viewed and the detector is configured.

Four CR123A batteries.

Installation

An alarm installer should survey the area and fit it. It mounts on a wall or pole at 0.8 to 1.3 m.

A detection range adjustment switch and three PIR sensitivity levels let the installer tune coverage.

Point it away from roads, swaying plants and moving water to limit false triggers.

Before you buy

Compatible with ARC3800H series hubs only.

Camera use shortens battery life: about 3.5 years with camera alarms twice a week against 5 years without.

The picture link range (1,000 m) is shorter than the alarm radio range (1,200 m), so check placement against the hub.