"Indent Item - Add 2-4 days to standard delivery time Higher sensitivity to Propane, other LPG, iso-butane etc Element behind stainless steel mesh Simple drive circuit Fast response Stable Applications : - Petrol vapour detector - Other safety equipment Supplied with comprehensive data, internal schematics, performance graphs etc. Specifications: - Heater Voltage: 5.0VAC or DC at less than 750mW - Operational Temp Range: -10 to + 50øC - Sensing Resistance Range: 10-60ohms (200-10,000ppm) - Accuracy at Relative Humidity less than 95%. "