Dahua DHI-HY-SA21A-W2(868) detector/sensor

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Dahua DHI-HY-SA21A-W2(868) detector/sensor — buy in Tashkent

Dahua DHI-HY-SA21A-W2(868) wireless smoke detector — a compact and effective device for early detection of smoke in residential and commercial premises. The split-spectrum sensor technology increases detection reliability and reduces the number of false triggers from steam or dust. It operates at a frequency of 868 MHz and is easily included in the Dahua wireless security system without running wires.

Advantages

The split-spectrum technology provides accurate smoke recognition and fewer false alarms
A loud sound signal of more than 85 dB(A) at a distance of 3 meters guarantees notification even in noisy rooms
One-button self-test allows you to quickly verify the device's functionality without removing it from its place
Wireless operation at 868 MHz simplifies installation: there is no need to chisel walls or run cables
Low current consumption in standby mode extends battery life
The one-button mute function is convenient during ventilation or accidental triggering

Applications

Apartments, private houses and cottages — protecting the family from fire
Hotels and apart-complexes where autonomous notification is required in each room
Office and retail premises with mandatory fire safety requirements
Warehouse and production facilities where an early smoke signal is important
Educational institutions, medical facilities and premises with constant presence of people

Frequently asked questions

Can the detector be integrated into an existing Dahua alarm system?

Yes, the device operates at a frequency of 868 MHz and is compatible with Dahua wireless hubs, forming a unified security and fire system.

How often should the sensor's functionality be checked?

It is recommended to check once a month — press the self-test button and make sure the signal sounds clearly.

What does split-spectrum technology mean?

This is a method of analyzing the optical signal in which the sensor distinguishes smoke of different densities and filters out false triggers from steam, dust and insects.

Dahua DHI-HY-SA21A-W2(868) detector/sensor

Product reviews

Advantages

Applications

Frequently asked questions