Gas detector, 230V, warns of leaks of methane (town/natural gas) 0.4%, propane 0.24% or butane 0.2% (liquefied petroleum gas). Gas alarm with loud 85 dB(A) warning tone and visual displays. Changeover relay contact: 230V AC / max. 5A. Alarm output: 12V DC, max. 200mA (e.g. siren AS05 or flashing light BL02). Power supply: 230V, 50Hz (6 VA) via 1.2m connection cable with Euro plug. Complies with EN 50194-1:2009. Dimensions: 140 x 125 x 42mm.