3M CTC334-WW, Ground Man Plus Ground MonitorCondition:* Used Sales Sample. In OEM Packaging. Additional Notes:* Continuously monitors for ground impedance on three separate channels that are connected to three process tools. The alarm level is set the same for all channels.* An output signal is available for connecting to the tools computer or PLC. The 5 Volt signal is either logic 1 or 0 for indicating the monitored ground resistance/impedance conditions and for the wrist strap. * The Ground Man Plus Ground Monitor has a feature that allows continuous monitoring of voltage on a person through a dual conductor wrist band assembly* The alarm level can be preset from 1 to 20 Ohms (From 1 to 10 Ohms in increments of 1 Ohm and from 10 to 20 Ohms in increments of 2 Ohms)* AC/DC Adapter Universal 100 – 240 Volt AC, 0.5 Amp, ~50 – 60 Hz Output: 12 Volt DC, 1.5 Amp3M CTC334-WW