This Prolight gas detector detects methane, butane and propane gas. Power supply: 12V 200mA. Battery: E-BLOCK 9V DC. Capture: methane, butane, propane. Gas volume ratio: ≤ 10% LEL sensitivity. Battery life: 1 year. Detector lifetime: 5 years. Alarm signal: 85 dB(a) at 3 m. Discharge indicator light. Test function. Temperature in operation: -10 °C to +50 °C. Moisture content: < 90%. Quality label: EN50194