Combustible gases and vapours Range: 0 .. 100 % LEL, 0 .. 50 % LEL Output signal: 4 – 20 mA Power supply: 15 – 30 V DC Response time: 12 seconds Casing protection: IP64 Weight: 800 g with display Display: LEDs for operation / fault Dimensions: 100 x 193 x 55 mm Expected sensor life: 3 - 5 years