Dahua DHI-ARD821-W2(868)-B - Wireless Alarm Detector

Dahua DHI-ARD821-W2(868)-B — Wireless Alarm Detector

The Dahua DHI-ARD821-W2(868)-B is a wireless detector from Dahua's intruder alarm range, built for use with a compatible Dahua wireless alarm hub. It communicates over the 868MHz radio band and includes accidental-press prevention to help reduce false alarms, with a compact housing designed to be fixed securely to a mounting board.

Who is it for?

This detector suits installers and end users building out or expanding a Dahua wireless intruder alarm system who need an additional 868MHz wireless sensor point. It is intended to be paired with a Dahua wireless alarm hub/panel as part of a wider monitored alarm setup rather than used as a standalone device.

Key specification

What you will need

• A compatible Dahua wireless alarm hub/panel to receive this detector's signal
• Battery power for the detector (fitted/replaced by the installer)

Frequently asked questions

Does this detector work on its own?

No, it needs to be paired with a compatible Dahua wireless alarm hub/panel to form part of a working alarm system.

What does the 868MHz frequency mean?

868MHz is the radio band this detector uses to communicate wirelessly with the alarm hub, so the hub must support the same frequency.

What is accidental-press prevention?

It's a design feature intended to reduce the chance of the detector being triggered unintentionally, helping to cut down on false alarms.

How is it installed?

The unit is designed to be fixed to a mounting board, making for a straightforward, secure installation.

Browse the full Dahua range, our Intruder alarms category, or Contact us on 01902 902251 to check compatibility — or visit our Wolverhampton trade counter.