Wisualarm DHI-HY-SA30A-R8-B Wireless Interconnected Smoke Alarm | Photoelectric, 85dB Alarm, 10-Year Battery
£21.15 (inc VAT: £25.38)
Key features
- Test and silence combined in one button
- Wirelessly links with up to 24 units
- Silenced via infrared remote control
Downloads
Summary
The Dahua DHI-HY-SA30A-R8-B gives you a smoke alarm that talks to every other unit on the same wireless network, so one triggered alarm raises the whole property in unison rather than leaving a single room shouting into an empty hallway. That’s the job it’s built for: fast, reliable smoke detection across houses, apartments and multi-room dorms where a hardwired interconnect isn’t practical or wanted.
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For you on site, this means fewer cable runs, faster first-fix, and a genuine selling point when quoting whole-property coverage instead of room-by-room detectors. The single test/silence button and infrared remote silencing also cut down callbacks for false alarm nuisance complaints, saving you return visits.
It delivers this through a photoelectric split-spectrum sensor chamber that samples smoke every 9 seconds, a built-in non-replaceable 3V CR123A lithium cell rated for 10 years, and an 868 MHz radio that links up to 24 devices without any additional gateway hardware. The unit is TÜV and CE listed and built to EN 14604:2005+AC:2008.
Features
- Split-spectrum sensor technology – improves discrimination between real smoke and common nuisance sources, cutting false alarm callbacks
- Test and silence in one button – simplifies commissioning and end-user operation without a second control
- Wireless interconnection up to 24 units – covers a full property from a single network without running interconnect cable
- Infrared remote silencing – lets you or the occupier silence a false alarm from a distance without reaching the ceiling
- Built-in 10-year lithium battery – removes battery replacement visits and low-battery callbacks for the life of the unit
- Low quiescent current consumption – supports the long standby life needed to hit the full 10-year rating
- Surface-mount device (SMD) circuit board – supports a compact, low-profile enclosure at just 43.1 mm deep
- Low battery warning – flags an ageing unit early via the red indicator so it can be scheduled for replacement
FAQ
Yes. It uses the same 868 MHz wireless protocol and links with up to 24 compatible units on the network, regardless of casing colour, so you can mix units across a property as needed. If you’re extending an existing installation, confirm firmware and protocol compatibility with the manufacturer before committing to a large network. The battery is built in and non-replaceable, rated for around 10 years of service. When it approaches end of life the red indicator flashes once per minute as a low battery warning, and the whole unit should be replaced rather than the battery alone. Pressing the test/silence button mutes the alarm for 12 minutes, after which it resumes normal monitoring rather than staying silenced indefinitely. This is designed for temporary nuisance situations such as cooking smoke, not for permanently disabling detection. No. It’s a self-contained ceiling-mount device with a built-in battery and no mains connection, so installation is a straightforward ceiling fix rather than a wiring job. This makes it suited to retrofits where running new cable isn’t practical. For ceiling heights under 8 m, the manufacturer rates each unit for a protection area of 20-40 m². For larger or taller spaces, or where guidance is unclear, check the full manual or confirm the layout with the manufacturer before finalising a design. It’s TÜV and CE listed and built to EN 14604:2005+AC:2008, the standard for domestic smoke alarms. If your job specifies a different national fire alarm standard, check that against the project requirements before specifying.Can this be interconnected with other alarms in the same range?
What happens when the battery starts to run down?
How long does the silence function last, and does it fully disable the alarm?
Does this alarm need mains wiring or a separate base unit?
What size room or area will one unit cover?
Is this alarm suitable for a job requiring specific compliance sign-off?
Specifications
| Collection Type | Smoke |
|---|---|
| Working Principle | Photoelectric |
| Sampling Period | 9 s |
| Alarm Type | Smoke alarm, fault alarm, low battery warning |
| Alarm Volume | 85 dB(A) at 3 m (9.84 ft) |
| Alarm Mode | Visual and audible alarm |
| Silencing Function | Yes |
| Silence Duration | 12 min |
| Infrared Silence | Yes |
| Pre-Set Alarm Value | 0.2dB/m-0.3dB/m |
| Indicator Light | Alarm, fault and operation indicator |
| LED Instructions | Standby: green indicator flashes once per minute. Alarm: red indicator flashes once per second. Fault: red indicator flashes once per minute. Low battery warning: red indicator flashes once per minute |
| Operating Frequency | 868 MHz |
| Maximum Number Of Interconnected Units | 24 pcs |
| Coverage Area | When the height of the space is less than 8 m (3.28 ft), the protection area of a device is 20 m²-40 m² |
| Battery Life | 10 years |
| Power Source | 3V CR123A lithium battery (non-replaceable) |
| Operating Current | Monitoring current: ≤ 15uA (avg.). Alarm current: ≤ 25mA (avg.) |
| Operating Environment | Indoor |
| Operating Temperature | -10°C to +55°C (+14°F to +131°F) |
| Operating Humidity | ≤ 95% RH (non condensing) |
| Color | Black |
| Casing | PC+ABS |
| Dimensions | φ98 mm × H43.1 mm (φ3.85″ × H1.70″) |
| Weight | 138 g (0.30 lb) |
| Installation | Ceiling mount |
| Certifications | TÜV and CE listed |
| Compliance Standard | EN 14604:2005+AC:2008 |
Downloads
- Datasheet (Adobe PDF)