· High-performance sensor, intelligent and accurate detection of gas
leakage, and send out alarm signal timely
· Operate stably and identify gas type effectively
· Intelligent linkage to close pipeline valve and start exhausting fan
· A built-in high-volume buzzer, 70dB (A) at 1m (3.28 feet)
· Three indicator lights for displaying device status clearly
Alarm | DHI-HY-GA40A
System Overview
DHI-HY-GA40A Gas Alarm is designed to connuously monitor methane
concentraon. Adopng a catalyc-type gas sensor, advanced electrical
technology, MCU, a built-in high-volume buzzer, it responds quickly
and becomes highly sensive with stable performance and low false
alarm. Once the surrounding methane concentraon reaches the alarm
threshold, it will promptly send out visual and audible alarm signal to
remind the user to take immediate measures. The exhausng fan can be
linked to the relay output port to send out combusble gas. The Device
can also close the pipeline valve to cut o the gas source.
DHI-HY-GA40A
Gas Alarm
Scene
Applicaon scenarios include homes, restaurants, hotels and other
places that require methane detecon.
www.wisualarm.com/en/home
Technical Specificaon
Model DHI-HY-GA40A
Gas Type Methane (CH₄)
Alarm Threshold 10% LEL
Response Time ≤30 s
Supply Voltage
DC12V
Power Consumption ≤0.8W
Output 1 valve output, 1 relay output
Operating Temperature –10°C to +55°C (+14°F to +131°F)
Relative Humidity ≤95% RH (non condensing)
Warm-up Period 180 s
Alarm Method Visual and audible alarm
Alarm Sound Output 70dB (A) at 1m (3.28 feet)
Silence Support
Dimensions
86.6 mm × 86.6 mm × 29.2 mm (3.41" × 3.41"
× 1.15")
Installation Wall mount
Certification CE
Funcons
Precise detecon
A catalyc-type gas sensor is used for precise detecon, stable perfor-
mance and long-term operaon. Alarm Threshold is 10% LEL.
Intelligent linkage
Aer alarm, it can automacally close the valve or turn on the exhaust-
ing fan, and address the leakage in me.
Muldimensional detecon
It can detect the gas concentraon and environment temperature.
Ordering Informaon
Type Part Number Descripon
Gas Alarm
DHI-HY-GA40A Gas Alarm (Methane)
