Gas detector, 12V DC, 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: max. 5A / 230V AC. Alarm output: 12V DC, max. 200mA (e.g. siren AS05 or flashing light BL02). Power supply: 12V DC, 130mA. Design tested in accordance with EN 50194-1:2009. Dimensions: 140 x 125 x 42mm.