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Dahua DHI-HY-SA21A-W2(868) detector/sensor
Wireless smoke detector > Split-spectrum sensor technology > Single-button test and mute functions > Loud sound over 85 dB(A) at a distance of 3 meters > Low standby current consumption > Pro
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Type
wireless smoke detector
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Features
one-button self-test
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Frequency
868MHz
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Volume
>85 dB(A) at 3 m
Specifications
- Type
- wireless smoke detector
- Features
- one-button self-test
- Frequency
- 868MHz
- Volume
- >85 dB(A) at 3 m
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.
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