3M CTC330-WW, Iron Man Anti-Static MonitorCondition:* Used Sales Sample. In OEM Packaging. Additional Notes:* Size: 1.63″ x 2.4″ x 0.85″* Description/Function: Iron Man Soldering Iron Monitor with Universal Power Adapter* Alarm Threshold Ranges: 0…+/-5 Volt;0…+/-50 Volt* Threshold Adustment: Potentiometer* Threshold Range: Range Seleted by Jumper* Wrist Strap: Dual, 3.5mm Plug* Operator;s Resistance Alarm: Yes* Operator Body Voltage Alarm: Yes* Resistance To Ground: Yes* Alarm Visual: LED* Alarm Audio: Buzzer3M CTC330-WW