The Blow 50-682 detector continuously monitors indoor air for the presence of methane and propane-butane (LPG). When the concentration exceeds approximately 15% of the Lower Explosive Limit, it triggers an audible and visual alarm, which deactivates automatically when the concentration falls below the threshold. The additional outputs allow connection to alarm systems, solenoid valves and audible-visual signaling units.

It is used in domestic boiler rooms, kitchens and bathrooms with gas appliances; areas with gas meters, cylinders, tanks or pipelines; domestic garages with LPG installations; school physics and chemistry laboratories; caravans; and boats. It is manufactured in Poland and laboratory-tested using special gas mixtures.

• Gases detected: Methane and propane-butane (LPG)
• Sensor type: Semiconductor, Japanese-made
• Sensor life: 10 years
• Alarm threshold: Approximately 15% of the Lower Explosive Limit
• Alarm: Audible and visual, with a red LED and an 85 dB piezoelectric buzzer
• Additional outputs: Connection to alarm systems, solenoid valves and audible-visual signaling units
• Supply voltage: 230 V, 50 Hz
• Power consumption: 3 W
• Operating temperature: From -10 °C to +40 °C
• Operating relative humidity: From 30% to 95%
• Dimensions: 120 × 80 × 45 mm
• Weight: 0.30 kg