AEI-ST020 Single Threshold ESD Monitor   Genaral Info Installation Operation NMH Hub             Size (h.w.d): 1"x 2.4" x 2.3" Mounting Velcro (supplied)/optional bracket Operator Fault Condition = Greater than 10 Meg Ohm Bench mat Fault Condition = Greater than 10 Meg Ohm Power 115 VAC, 60 Hz Power Pack Visual Alarm Dual Color LED Indicators: Green = Safe, Red = Fault Audio Alarm Piezo Buzzer Operation Automatic, Unit is activated when operator plugs wrist strap connector into jack. Installation AEI-ST020 Installation and Test (PDF)