... replace 3.travel hotel use 4.CE, RoHS certificates Door Alarm SpecificationsMaterial:ABS plastic, electronic componentsDimensions:138 x 46 ... includedVoltage:6VSpecial Feature:cheap, good quality, travel useProduct Usage:house door, hotel doorExport Market:USA, Europe, Latin America, Africa, ... from unauthorized entry couldn't be easier. The Door Alarm requires no wires or complicated installation and is ...