PRODUCTS
SR-918-2 Combustible Gas Leakage Detector Without LCD
SR-918-2 detects combustible gas and optional CO with voice, LED, valve control and optional backup battery.
Main feature:
- Clear Human Voice Alerts for fast and easy alarm identification
- Highly Reliable Catalytic Combustion Sensor for stable combustible gas detection
- Real-Time Gas Concentration Display with clear PPM readings
- Flexible Dual Power Supply: AC 90–240V or 9V rechargeable battery
- Intelligent Microprocessor Control for accurate monitoring and rapid response
- Automatic Low-Battery Warning to ensure continuous protection
- Alarm Memory Function for reviewing previous alarm events
- Automatic Sensor Fault Detection for enhanced operational reliability
Technical Specification：
| SR-918-2 without LCD series | SR-918-2NS | SR-918-2NV | SR-918-2DS | SR-918-2DV |
|---|---|---|---|---|
| Detecting gas type | Combustible gas | Combustible gas and CO | ||
| Alarm | Human voice prompt and LED | |||
| Carbon monoxide gas alarm | / | 100PPM~999MM (±50PPM) | ||
| Combustible gas | 5LEL% ± 3 LEL | |||
| Warm-up time | about 180s | |||
| drivable accessories | / | electromagnetic valve | / | electromagnetic valve |
| Material | ABS Plastic | |||
| AV voltage | AC 90V-240V 50-60Hz | |||
| Battery voltage | 9V Rechargeable battery(optional) | |||
| Working temperature | 0°C-50°C | |||
| Ambient Humidity | 10%-95% | |||
| Sound level | 85dB/m | |||
| Size | 120*75*40mm | |||
| Weight | 236g | |||
FAQ：
1. What are the differences between the SR-918-2 models?
The SR-918-2NS and SR-918-2NV detect combustible gas. The SR-918-2DS and SR-918-2DV detect both combustible gas and carbon monoxide. The NV and DV versions also support electromagnetic valve control.
2. What is the combustible gas alarm level?
The specified combustible gas alarm level is 5% LEL ±3% LEL. For the DS and DV models, the listed carbon monoxide range is 100–999 ppm with ±50 ppm accuracy. Buyers should confirm the required alarm thresholds before project approval.
3. What power supply does the SR-918-2 support?
The detector operates from AC 90–240V, 50/60Hz. An optional 9V rechargeable battery can provide backup power according to the selected configuration.
4. Can the detector control an electromagnetic gas valve?
Yes. The SR-918-2NV and SR-918-2DV versions can be connected to a compatible electromagnetic valve. The NS and DS versions do not include this valve-control function.
5. Which specifications should engineers confirm before ordering?
Project engineers should confirm the target gas, CO detection requirement, valve-output requirement, power standard and battery configuration. The detector has an approximately 180-second warm-up time, 85dB alarm, 0–50°C operating temperature and 10%–95% ambient humidity.