These Agilent Varian wireless remote control units are designed to be used with VS series helium leak detectors, like the models VSPR021, VSPD031, VSMR151, VSBR152, VSMD301, VSBD302. This wireless remote will provide remote information and control functions of the helium leak detector and provide signal for the level of helium leak being detected. This is the sale of wireless remote unit only. The corresponding wireless base is sold separately. An instruction manual in PDF format for the new Agilent Varian wireless remote control can be downloaded in our available download section below. These units have Agilent Varian part number G8600-60002 (they replaced previous Varian part number VSLDWRC).