The AT-GD206 Combustible Gas Detector provides early warning of gas leaks in residential and light commercial applications. Using a high-quality, durable gas sensor and MCU-based intelligent processing, the detector continuously samples the surrounding air for combustible gases such as natural gas (methane), bottled gas (propane), LPG (liquefied petroleum gas), LNG (liquefied natural gas), coal gas and town gas.
When the gas concentration reaches the preset threshold (typically 10% LEL for LNG gas), the red gas alarm LED lights and the built-in sounder emits an 80 dB audible alarm. At the same time, the detector drives its relay output, which can be wired to shut down a gas valve or send a signal to a fire or security alarm control panel.
The unit is powered by DC 9–28 V, with very low power consumption — less than 1.5 W in standby and less than 5 W in alarm. LED indicators on the front panel show power (green), fault (yellow) and gas alarm (red) status, while a Test/Mute/Reset button allows regular function testing, alarm silence and manual reset after an alarm or fault.
With a compact housing (120 × 72 × 42 mm), ceiling-white colour and simple wall-mount installation, AT-GD201 is especially suitable for domestic kitchens, gas boiler rooms, small restaurants, utility rooms and other areas where combustible gas leakage may occur.
Detects a wide range of combustible gases: natural gas (methane), bottled gas (propane), LPG, LNG, coal gas, town gas, etc.
Loud 80 dB alarm with red LED gas alarm light for clear warning.
MCU intelligent software provides self-diagnostic function and stable performance.
High quality, durable gas sensor with excellent reliability and high stability.
DC 9–28 V wide-range power input with low power consumption.
Relay output (NO/NC/COM) for connection to gas shut-off valves or alarm panels.
Front-panel Test / Mute / Reset button for easy operation and maintenance.
Compact wall-mounted design, simple installation – ideal for all kitchens.
| Item | Specification |
|---|---|
| Model | AT-GD201 Combustible Gas Detector |
| Housing Colour | Ceiling white |
| Mounting | Wall mounted |
| Unit Dimensions | 120 mm (H) × 72 mm (W) × 42 mm (D) |
| Item | Specification |
|---|---|
| Operating Voltage | DC 9–28 V |
| Power Consumption | < 1.5 W (standby), < 5 W (alarm) |
| Alarm Output | Relay output, 1 A @ DC 24 V (NO/NC/COM) |
| Item | Specification |
|---|---|
| Detected Gases | Natural gas (methane), bottled gas (propane), LPG, LNG, coal gas, town gas, other combustible gases |
| Detection Threshold | LNG gas: 5000 ppm (≈ 10% LEL) |
| Item | Specification |
|---|---|
| Operating Temperature | -10°C to +50°C |
| Ambient Humidity | ≤ 95% RH |
| Alarm Sound Level | 80 dB |
| Item | Description |
|---|---|
| Power Light (Green) | On when power is present |
| Fault Light (Yellow) | On when detector is in fault condition |
| Gas Alarm Light (Red) | On during gas alarm |
| Test / Mute / Reset Button | Function test, alarm silence and reset |
| Internal Alarm Horn | 80 dB buzzer for test, alarm and malfunction warning |
| Terminal | Wire Colour | Function |
|---|---|---|
| T1 | Red | DC+, DC power positive input (9–28 V) |
| T2 | Black | DC-, DC power negative input |
| T3 | Yellow | NO, relay normally open contact |
| T4 | Green | NC, relay normally close contact |
| T5 | White | COM, relay common contact |
Residential kitchens and utility rooms
Gas stove and gas boiler areas in apartments or villas
Small commercial kitchens and restaurants
Gas meter rooms and small gas equipment rooms
RVs and recreational vehicles (DC powered gas protection)
