Wisualarm DHI-HY-GA20A-R8 Wireless Interconnected Methane and LPG Gas Detector

Unlike standalone gas alarms that only sound locally, the Wisualarm DHI-HY-GA20A-R8 creates a wireless safety network: when one unit detects methane or LPG, every interconnected detector in the building alarms simultaneously. This 433 MHz RF link supports up to 20 detectors, so a leak in the basement instantly alerts occupants in the attic. The high-sensitivity semiconductor sensor responds in under 30 seconds to concentrations as low as 6% LEL, while the 85 dB siren and flashing LED provide unmistakable warning. Powered directly from a 220-240V AC outlet, it requires no battery changes and includes a self-test function for ongoing reliability. The white ABS housing mounts on any wall or simply plugs into a socket, blending into kitchens, boiler rooms, or utility areas. CE and RoHS certified, this detector is a practical safeguard for homes, workshops, and small commercial spaces.

Highlights

• Wireless interconnection up to 20 units via 433 MHz RF
• Detects methane (natural gas) and LPG (propane/butane)
• Loud 85 dB alarm at 1 meter with flashing LED
• Fast response under 30 seconds at 6% LEL threshold
• Plug-in AC power with automatic reset and self-test
• Durable ABS housing, suitable for wall mounting

In daily use

Installation takes minutes: plug the detector into a standard 220-240V outlet or mount it on the wall near potential gas sources. Once powered, the device continuously monitors the air. If gas reaches the alarm threshold, the built-in siren activates and the LED flashes, while the RF module sends a signal to all paired detectors. The automatic reset clears the alarm once the gas dissipates, and the self-test function lets you verify operation at any time. No battery replacements are needed, making it a low-maintenance safety solution.

Full specifications

• Detection gas type: Methane (Natural Gas), LPG (Propane, Butane)
• Sensor type: High-sensitivity semiconductor sensor
• Alarm threshold: 6% LEL ± 3% LEL
• Alarm volume: ≥ 85 dB at 1 meter
• Wireless interconnection: Up to 20 units, 433 MHz RF
• Power supply: AC 220-240V, 50/60Hz
• Power consumption: < 3W
• Operating temperature: -10°C to +50°C
• Operating humidity: ≤ 95% RH (non-condensing)
• Alarm indication: Audible alarm and flashing LED
• Response time: < 30 seconds
• Sensor lifespan: 5 years
• Self-test function: Yes
• Installation type: Wall-mounted (plug-in)
• Reset type: Automatic reset
• Certifications: CE, RoHS
• Housing material: ABS plastic
• Colour: White

Final note

With its wireless interconnection and dual-gas detection, the Wisualarm DHI-HY-GA20A-R8 offers comprehensive protection for any space where gas leaks are a concern.