FCC-0843 is an External Sounder Strobe Unit, made of polycarbonate with stylish hexagonal design. It offers environmentally sealed microprocessor technology, twin piezo sounders and triple tamper protection ensure uncompromising performance. It also offers based on the fully featured, the Premier Odyssey E audible and visual alarm signalling device is perfect for protecting premises that require maximum security whilst optimizing value. The captive screw fixing method when combined with a tamper switch, provides the earliest possible indication of unauthorised access to the unit. The fully adjustable wall & lid tamper switch provides maximum flexibility to each installation. The low current mode is jumper selectable, as with SCB mode it enables a reduction in current drawn from the control panel, to allow installation of additional external sounders. Low current mode maintains significant sounder volume.