Profile: Mercer Electronics Ltd. specializes in the manufacture of surveillance domes and control systems. Our products include internal & external domes, fixing equipment, control equipments, peripherals, monitor housing and power supplies. Telemetry control keyboard (MM500TXB) is a variable speed meridian keyboard (MM500TXB) is capable of controlling up to 512 cameras on 16 monitors using an appropriate matrix. Pan, tilt, zoom, iris and focus are simultaneously controlled. The Apex Dome™ with QuickSwitch™ technology is a 150mm diameter housing designed to offer users a small, unobtrusive dome camera for many different installation requirements. It can be mounted in a variety of different ways including pendant, surface, wall, false or solid ceiling. The lower covers are available in smoked or mirrored for maximum camera obscurity or clear for minimal light loss. In each case a rotating inner skin is included for added covertness. The dome can be specified as being fully functional, Lite functional, static or simulation (no camera).