The CM1600 is the Ranger Elite Dual Wire Constant Monitor. The CM1600 will monitor resistance on 2 operators wrist straps and 2 work surface mats. This system also provides two unmonitored ground jack ports. The Ranger Elite is an extremely sensitive monitor, that accurately measures the electrical resistance of an ESD wrist band and signals if the device fails. This system is the simplest and most economical Resistance Monitor on the market today. Audible and visible alarms are triggered if the operator’s resistance exceeds 35 meg ohm or if the work surface exceeds 100 meg ohm. The CM1600 Constant Monitor dimensions are 2" W x 3" D x 1" H. The CM1600 Constant Monitor is compatible with the WB-5000, WB-7000, WB-2800 and the WB-2695P Series Wrist Straps.