Gas Type: Natural Gas / CH4 / methane
Battery Life: 10 Years
Lithium Battery: 3 CR17505 3V 3000ma Battery
Detection Principle: MEMS Thermoelectric Semiconductor Sensor
Operating Temperature Range: 32°F (0°C) to 122°F (60°C)
Operating Humidity Range: 5% to 95% non-condensing
10 Years Battery Life Gas Detector AJ-987
The AJ-987 model gas detector is designed specifically for monitoring combustible gases such as Natural Gas / CH4 / methane. It features high-quality sensors manufactured in Japan, ensuring long-term stability and reliability.

Key Features
- Working Voltage: DC3V Built-in lithium battery CR17505*3
- Sensor life: 10 years
- Battery life: 10 years
- Standby current:﹤3uA
- Alarm current:﹤60mA
- Low voltage threshold:2.3V
- Alarm mode:LED & Buzzer
- Alarm threshold: 10% LEL
- Alarm sound:﹥85dB/3m
- Detection range: about 25 square meteres
- Operating temperature: -10℃~+50℃
- Working humidity: <93%
- Product size : 108 × 88 × 40mm (4.25in X 3.46in X 1.57in)
Technical Specifications
| Model | AJ-987 |
|---|---|
| Gas Type | Natural Gas / CH4 / methane |
| Gas Sensor | Japanese sensor with 10-year lifespan Methane sensor complies with UL STD 2075 |
| Battery | 3 × CR17505 3V 3000mAh lithium batteries 10-year battery life |
| Detection Principle | MEMS thermoelectric semiconductor sensor |
| Operating Temperature | 32°F (0°C) to 122°F (60°C) |
| Operating Humidity | 5% to 95% (non-condensing) |
| Display | LCD showing real-time gas level and battery state |
| Alarm Level | 10% Lower Explosive Limit |
| Alarm Output | 85 dB at 3m |
| Dimensions | 108 × 88 × 40mm (4.25in X 3.46in X 1.57in) |
Product Function Parameter Comparison
| Model | Power supply | Methane(CH4) | Carbon Monoxide(CO) |
|---|---|---|---|
| AJ-987 | Non-replaceable 3V Lithium Battery 3PCS 10 years | ✓ | × |
| AJ-987GC | Non-replaceable 3V Lithium Battery 3PCS 10 years | ✓ | ✓ |
Product manual: Manual for Natural Gas Detector Anka Security aj-987
Recommended reading for related information
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- What is a Wireless Interconnected Smoke Alarm
- What Triggers a Gas Detector? A Guide to Sensors and Alarm Levels
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- The Definitive Guide to Smoke Detector Wholesale in Australia
- Hardwired Smoke Detectors: The Gold Standard for Home Fire Safety



