Drager Miniwarn Mini Warn gas Detector Stand Alone Unit Siren B CH4 O2 CO H2S

Used rare Drager mini warn detects CH4, O2, CO, and H2S gas detector built by Drager on this remote stand alone unit used by us over 10’years ago it powers up ok and works plugged in when I apply a none genuine charge lead to it as per pics this unit cost over £1000 new I know it’s old and also idea on its value these days as it will. Red calibrating and most likely a new battery. I can post this but I will have to remove the legs and handle. Battery only last a few mos once charger removed

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