DISCOVER BRAND DUAL SENSING GAS ALARM SLA-862 BOXED NEW SUITABLE FOR MOTORHOMES/CARAVANS&BOATS DETECTS KNOCK-OUT BUTANE/PROPANE METHANE & NATURAL GAS 12 VOLTS OPERATION INTEGAL SOUNDER COLOURED ALARM LED'S CAN ALSO CONNECT TO ALARM /EXTERNAL SIREN ALARM TEST BUTTON THESE ALARM'S ARE A MUST IF YOU TRAVEL IN EUROPE SLEEPING ON SERVICE STATIONS OR WILDCAMPING FOR YOU PIECE OF MIND SIMPLE TO INSTALL FULL INSTRUCTION'S INCLOSED SURPLUS SPRING CLEANING |