The Edwards Turbo and Active Gauge (TAG) controller is a small low cost pumping system controller, suitable for a wide range of vacuum applications and compatible with all Edwards EXT and nEXT turbo pumps. The large LED display shows the pump speed or vacuum pressure and an easy to use push button interface enables ease of operation and control. TAG controllers will also run a backing pump, air vent valve an air cooler and an Edwards active gauge, making the TAG a versatile system controller. This compact 24 VDC TAG controller is ideal for use on bench-tops or suitable for mobile platforms where space is limited yet functionality and reliability are essential. NOTE: This TAG Controller contains NO POWER SOURCE therefore you must use your own 24 VDC power supply or purchase an Edwards Power Supply from this website, power supply PN D39592800.