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Natural gas alarm PREFER

Natural gas alarm PREFER
Natural gas alarm PREFER
Natural gas alarm PREFER
Natural gas alarm PREFER
Natural gas alarm PREFER
Natural gas alarm PREFER
Natural gas alarm PREFER
Natural gas alarm PREFER
Natural gas alarm PREFER
175.00 zł
Ex Tax: 142.28 zł
  • Stock: In Stock
  • Model: PRI-PREF
  • Weight: 268g
  • Dimensions: 93mm x 75mm x 38mm

PREFER detector is designed to monitor rooms in terms of the presence of natural gas (LNG, methane).

Device continuously measures the methane concentration in the ambient air, and in the event of detection of a gas leak, it activates optical and acoustic alarm signaling and activates the contact output. Detector has a self-diagnostic system that monitors the detector and internal circuits.

In case of malfunction, the yellow LED lights up to indicate that a fault has been detected. Detector is powered by 230V / 50Hz mains voltage via a 1.8 m long cable. Manufactured in accordance with the EN50194-1: 2009 standard. It can be installed in rooms where the temperature does not drop below -10°C and doesn't rise above +40°C (periodically -20 ~ 50°C) and the relative humidity does not exceed 90%.

The undoubted advantage of detector is the ability to connect, via the contact output, additional devices, e.g. a fan, external optical or acoustic signaling device, gas shut-off control valve, SMS notification module, etc.

Kitchen rooms equipped with a gas cooker, boiler rooms with natural gas stoves, rooms with gas appliances, such as: valves, gas meters, gas pipes, school chemical and physical laboratories.


  • High sensitivity SnO2 semiconductor sensor
  • Optical and acoustic signaling at a concentration of 9% LEL
  • Reliability and high stability of the sensor
  • Device operation efficiency control system
  • Test / Reset button for checking and operating the device
  • Simple assembly and operation
  • Signaling of incorrect work
  • Simple assembly and operation
  • Contact output for connecting additional devices
  • Aesthetic and durable housing
  • 12-month warranty
  • Sensor with durability up to 5 years
Product information
Sensor Semiconductor (SnO2)
Gases detected Natural gas (LNG, methane)
Alarm threshold 9% LEL (Lower Explosive Limit of gas)
Alarm signaling Optical - blinking red LED
Acoustic - siren with a sound intensity of approx. 85 dB / 1m
Signaling of incorrect operation Blinking yellow LED
Sensor durability Up to 5 years*
* It is maximum battery lifetime. It can be affected by many external factors such as storage method, mounting location, environmental conditions, etc.
Housing ABS, white color
Protection class IP42
Additionally included Mounting bracket
Mounting pins
User manual
Power source 230V AC (-15%; +10%) 50/60Hz
Power consumption 4 VA
1.8 m power cable, terminated with a European type C plug
Working and storage conditions
Working conditions Temperature: -10 ~ 40°C
Humidity: 20 ~ 90% RH RH, non-condensing
Storage conditions Temperature: -20 ~ 50°C
Humidity: 20 ~ 90% RH RH, non-condensing
Quality and safety
Certificates and approvals CE mark
Warranty 12 months

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