To fully comply with current legislation on the stunning of poultry, it is necessary to have indication of both the applied voltage and current flowing during the stunning process. This interface box, which includes a voltmeter and ammeter, has been designed to be used in conjunction with the Poultryman hand held stunner. Upgrade existing stunner to be fully compliant. Displays on a clear linear scale both RMS volts and amps. Easy to install – just plug in. No tools necessary. Calibrated meters and overload protected.