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WisuAlarm Battery Standalone Smoke Alarm Twin Pack
We Recommend
Bestseller
Code: FDS002/835
INC VAT
Code: FDS002/835
The WisuAlarm Smoke Detector Twin Pack is a practical solution for adding reliable smoke detection to two key areas of the home.
Supplied as a pack of two standalone smoke alarms, it is ideal for spaces such as hallways, landings, bedrooms and living rooms where dependable everyday protection is needed.
Each alarm uses split-spectrum sensor technology to respond quickly to smoke while helping to reduce nuisance alarms from normal household activity.
Powered by 10-year lithium batteries, both units provide long-life protection without the need for wiring or regular battery replacement.
A built-in high-volume sounder delivers a clear warning when smoke is detected, while the combined test and hush button makes routine checking and silencing straightforward.
This twin pack is a convenient choice for homeowners, landlords, holiday lets and rental properties looking for low-maintenance smoke alarm coverage in more than one room.
Twin pack – ideal for multi-room coverage
Split-spectrum sensor technology – for faster and more accurate smoke detection
10-year lithium battery – maintenance-free operation
Test and hush features – convenient all-in-one button for easy operation
85 dB(A) sound output – loud enough to alert you across the home
Low battery warning – for timely replacement
Easy installation – simple setup with no wiring required
Unique silence feature – press the built-in button or use any infrared remote to silence the alarm
Specification | Details |
|---|---|
Collection Type | Smoke |
Sampling Period | 9 s |
Sensor Type | Photoelectric |
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 |
Alarm Response Threshold | 0.2 dB/m-0.3 dB/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 | |
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 year |
Power Source | 3V CR123A lithium battery (replaceable) |
Operating Current | Monitoring current: ≤ 15uA |
Alarm current: ≤ 35mA | |
Operating Environment | Indoor |
Operating Temperature | -10°C to +55°C (+14°F to +131°F) |
Operating Humidity | ≤ 95% RH (non condensing) |
Color | White |
Casing | ABS |
Dimensions | φ98 mm × H43.1 mm (φ3.85" × H1.70") |
Weight | 136 g (0.30 lb) |
Installation | Ceiling Mount |
Certifications | TÜV and CE listed |
Compliance Standard | EN 14604:2005+AC:2008 |
Type | Smoke Alarm |
Part Number | DHI-HY-SA20A |
Description | Standalone Smoke Alarm |
Install smoke alarms on every level of your home, including the basement, and inside each bedroom or sleeping area. Avoid placing them near windows, vents, or high-humidity areas like kitchens or bathrooms.
Test your smoke alarm at least once a month by pressing the test button. This ensures the unit is working properly and ready to alert you in an emergency.
If the smoke alarm sounds, evacuate the building immediately. Do not re-enter until you’ve confirmed it’s safe to do so. If there’s no fire, the alarm may be due to smoke from cooking or steam.
The WisuAlarm Smoke Detector Twin Pack is a practical solution for adding reliable smoke detection to two key areas of the home.
Supplied as a pack of two standalone smoke alarms, it is ideal for spaces such as hallways, landings, bedrooms and living rooms where dependable everyday protection is needed.
Each alarm uses split-spectrum sensor technology to respond quickly to smoke while helping to reduce nuisance alarms from normal household activity.
Powered by 10-year lithium batteries, both units provide long-life protection without the need for wiring or regular battery replacement.
A built-in high-volume sounder delivers a clear warning when smoke is detected, while the combined test and hush button makes routine checking and silencing straightforward.
This twin pack is a convenient choice for homeowners, landlords, holiday lets and rental properties looking for low-maintenance smoke alarm coverage in more than one room.
Twin pack – ideal for multi-room coverage
Split-spectrum sensor technology – for faster and more accurate smoke detection
10-year lithium battery – maintenance-free operation
Test and hush features – convenient all-in-one button for easy operation
85 dB(A) sound output – loud enough to alert you across the home
Low battery warning – for timely replacement
Easy installation – simple setup with no wiring required
Unique silence feature – press the built-in button or use any infrared remote to silence the alarm
Specification | Details |
|---|---|
Collection Type | Smoke |
Sampling Period | 9 s |
Sensor Type | Photoelectric |
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 |
Alarm Response Threshold | 0.2 dB/m-0.3 dB/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 | |
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 year |
Power Source | 3V CR123A lithium battery (replaceable) |
Operating Current | Monitoring current: ≤ 15uA |
Alarm current: ≤ 35mA | |
Operating Environment | Indoor |
Operating Temperature | -10°C to +55°C (+14°F to +131°F) |
Operating Humidity | ≤ 95% RH (non condensing) |
Color | White |
Casing | ABS |
Dimensions | φ98 mm × H43.1 mm (φ3.85" × H1.70") |
Weight | 136 g (0.30 lb) |
Installation | Ceiling Mount |
Certifications | TÜV and CE listed |
Compliance Standard | EN 14604:2005+AC:2008 |
Type | Smoke Alarm |
Part Number | DHI-HY-SA20A |
Description | Standalone Smoke Alarm |
Install smoke alarms on every level of your home, including the basement, and inside each bedroom or sleeping area. Avoid placing them near windows, vents, or high-humidity areas like kitchens or bathrooms.
Test your smoke alarm at least once a month by pressing the test button. This ensures the unit is working properly and ready to alert you in an emergency.
If the smoke alarm sounds, evacuate the building immediately. Do not re-enter until you’ve confirmed it’s safe to do so. If there’s no fire, the alarm may be due to smoke from cooking or steam.
If you’re looking for high quality fire detection, security of fire safety equipment, we are your one-stop-shop for everything you need to get your job done.
Fire Detection Shop has a wide range of products, kits and accessories in stock and ready to ship - so you can place your order now with confidence.
To help you choose the right product, our technical team are on the end of the telephone to answer your questions. Alternatively, you can complete the form here and one of our specialists will call you back.
We have a team of in-house engineers trained to design, install and commission the products we sell. If you’re interested in the services we can provide you with a quotation.
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