The Wisualarm DHI-HY-SA13A is a standalone battery-powered smoke alarm designed for residential and office protection. It uses an advanced photoelectric sensing chamber to detect smoke efficiently while reducing the false alarms that can plague cheaper detectors, backed by a high-power buzzer and clear visual and audible alerts.
Power comes from a long-life battery rated for up to 5 years of standby operation, so the unit can be fitted and largely forgotten between routine tests. As a standalone device it works independently of any mains supply or interconnect network, making it a straightforward option for individual rooms, rental properties and retrofit projects where wiring in a mains alarm isn't practical.
Photoelectric
Sensor Type
85dB
Alarm Volume @ 3m
5-Yr
Battery Life
Standalone
Operation
TÜV / CE
Certifications
LED
Status Indicator
Standalone Unit — No Interconnect
The SA13A operates as an independent, standalone alarm and does not interconnect with other Wisualarm devices, wired or wireless. Where a property needs multiple alarms to sound together, look to the interconnected Wisualarm smoke alarm range instead.
Why Photoelectric Detection
Photoelectric smoke sensing responds quickly to the visible, slow-burning smoke typical of smouldering fires — such as those starting in furniture or bedding — while remaining less prone to false alarms from cooking steam than ionisation-type detectors, making it a well-suited general-purpose choice for living areas, bedrooms and hallways.
Photoelectric Smoke Chamber
Advanced photoelectric sensing technology detects visible smoke particles quickly and accurately, cutting down on nuisance false alarms.
High-Power 85dB Buzzer
A built-in high-power buzzer sounds at 85dB(A) from 3 metres, loud enough to wake occupants and alert anyone nearby.
5-Year Battery Life
A long-duration battery rated up to 5 years keeps the alarm running through years of standby operation without a battery swap.
Visual & Audible Alerting
Combines LED indicators with the audible alarm so status and warnings are clear even in a noisy or brightly lit environment.
Quick, Simple Installation
Fits as a straightforward standalone ceiling-mounted unit with no wiring or network configuration required, ideal for retrofits and single-room coverage.
TÜV & CE Certified
Independently tested and certified to TÜV and CE standards, giving confidence in the alarm's reliability and safety performance.
Product Identity
Model number
DHI-HY-SA13A
Brand
Wisualarm (by Dahua)
Operation
Standalone (no interconnect)
Detection
Sensor type
Photoelectric
Power
Power source
Battery-powered
Battery life
Up to 5 years
Alarm Output
Alarm volume
85dB(A) at 3 metres
Alarm mode
Visual and audible alarm
Installation
Installation
Ceiling mount
Certification
Certifications
TÜV and CE listed
Does this alarm interconnect with other Wisualarm devices?
No. The SA13A is a standalone unit and does not link to other smoke or heat alarms, wired or wireless. For a linked multi-room system, choose from the interconnected Wisualarm range instead.
How long does the battery last?
The SA13A is rated for up to 5 years of battery life under normal standby conditions, though the alarm should still be tested regularly using its built-in test function.
What type of smoke does this alarm detect best?
Its photoelectric sensor responds particularly well to the visible, slow-burning smoke typical of smouldering fires, and is generally less prone to false alarms from cooking steam than ionisation-based detectors.
Where should this alarm be installed?
As a general-purpose standalone smoke alarm, it suits living rooms, bedrooms and hallways. For kitchens, garages and similarly fume- or steam-prone spaces, a heat alarm is the more appropriate choice.
BTU & WATT Calculator
Room Dimensions
Room Type
Living Room
Bedroom
Kitchen
Bathroom
Conservatory
Hallway
Glazing Type
Single Glazed
Double Glazed
Triple Glazed
External Walls
0 Wall
1 Wall
2 Walls
3 Walls
4 Walls
Insulation Level
Poor
Average
Good (New Build)
Required Heating
0
Watts
0
BTUs
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