·Split-spectrum sensor technology
·Test and hush features in one single button
·Loud sound output over 85 dB(A) at 3 meters
·Low quiescent current consumption
·Surface-mount device (SMD) circuit board design
·Low battery warning signal
Smoke Alarm | DHI-HY-SA20A
System Overview
Standalone Smoke Alarm (hereinaer referred to as the device) is
designed to connuously monitor smoke concentraon. Adopng new
split-spectrum sensor and a built-in high-volume buzzer, it responds
quickly and becomes highly sensive with stable performance and low
false alarm. Once the surrounding smoke concentraon reaches the
alarm value, it will promptly send out visual and audible alarm signal to
remind the user to take immediate measures.
DHI-HY-SA20A
Standalone Smoke Alarm
Scene
The device can be widely used in residenal areas such as villas,
apartments and dorms, including reading rooms, living rooms,
bedrooms and hallways.
www.wisualarm.com/en
Technical Specificaon
Working Principle
Collecon Type Smoke
Sampling Period 9 s
Sensor Type Photoelectric
Alarm
Alarm Type Smoke alarm, fault alarm, low baery
warning
Alarm Volume 85dB (A) at 3 m (9.84 )
Alarm Mode Visual and audible alarm
Silencing Function Yes
Alarm Response Threshold 0.2dB/m-0.3dB/m
Basic Parameters
Indicator Light Alarm, fault and operaon indicator
Led Instructions
Standby: Green indicator ashes once per
minute
Alarm: Red indicator ashes once per second
Fault: Red indicator ashes once per minute
Low baery warning: Red indicator ashes
once per minute
Coverage Area
When the height of the space is less than 8
m (3.28 ), the protecon area of a device is
20 m2–40 m2
Power Supply
Battery Life 10 year
Power Source 3V CR123A lithium baery (replaceable)
Operating Current Monitoring current: ≤ 15uA
Alarm current: ≤ 35mA
Operating Ambient
Operating Environment Indoor
Operating Temperature -10°C to +55°C (+14°F to +131°F)
Operating Humidity ≤ 95% RH (non condensing)
Appearance
Color
Casing
Dimensions
Weight
Installation
White
ABS
φ98 mm × H43.1 mm (φ3.85" × H1.70")
136 g (0.30 lb)
Ceiling Mount
