KSh 2,430(KSh 2,819 Incl VAT)
Device Type: Standalone Natural Gas (Methane) Leak Detector / Alarm
Model / SKU: DHI-HY-GA40A (also marketed under the Wisualarm brand)
Gas Type: Methane (CH₄) / Natural Gas
Sensor Type: Catalytic gas sensor
Alarm Threshold: 10% LEL (Lower Explosive Limit)
Response Time: ≤30 seconds
Alarm Sound Output: 70 dB(A) at 1 m (3.28 ft)
Alarm Method: Visual (3 status indicator LEDs) and audible alarm
Silence Function: Supported (manual silence button)
Outputs: 1 valve output + 1 relay output (for intelligent linkage to close a gas shut-off valve and start an exhausting fan)
Power Supply: DC 12V (power adapter included)
Power Consumption: ≤0.8W
Warm-up Period: 180 seconds
Operating Temperature: –10°C to +55°C (+14°F to +131°F)
Relative Humidity: ≤95% RH (non-condensing)
Physical & Installation: Dimensions 86.6 mm × 86.6 mm × 29.2 mm (3.41" × 3.41" × 1.15"); PC/ABS housing (white); wall-mount installation; packaged weight approx. 0.28 kg
Certification: CE
Key Specs: Dahua DHI-HY-GA40A standalone natural gas alarm, catalytic sensor, methane (CH₄) detection at 10% LEL, ≤30s response, 70dB(A) audible alarm at 1m, 3 status LEDs, valve + relay outputs for fan/valve linkage, DC12V/≤0.8W, 180s warm-up, compact 86.6×86.6×29.2mm wall-mount housing, CE certified
Usage: Early warning of natural gas/methane leaks in residential kitchens, boiler rooms, B&Bs, and light-commercial spaces; the relay and valve outputs enable automatic gas shut-off and ventilation fan activation upon detection, making it suitable for both standalone protection and simple safety interlock setups.
