Texecom Odyssey 1D Dummy Rectangular Bell Box is also known as alarm sounder, external sounder or piezo sounder and is mounted externally to alert and warn of a current activation on your burglar alarm system. Premier Odyssey suitable for grade 3 alarm installations. · · · Polycarbonate construction · · No internal workings or LEDs · · IP44 protection rating · · Weatherproof: The Ody1Dum Odyssey 1 Dummy Complete is weatherproof and can withstand the elements. · · Advanced Microprocessor Technology · · Twin Piezo Sounders · · Selectable SAB/SCB Mode · · Strobe Tube Saver