Scott Safety Protégé Gas Detector with Power and USB Module, need calibration Default:DefaultVariant 1 item missing

1 item missing

Medium-distance Type & Dedicated Communication Unit

980803 A 50/60Hz 3VA

Two same modules with different software

Scott Safety Protégé Gas Detector with Power and USB Module, need calibration Default:DefaultVariant 1 item missingUsed Scott Safety Protg portable gas detector with power and USB communication module. Has signs of use. Has stains. Has scratches. Refer to photos. The unit powers on and charges correctly. Basic zero calibration was attempted indoors and again outside in clean air, but the calibration failed each time. Gas detection, USB communication and alarm functions have not been fully tested. Sold as defective or for repair. Calibration status unknown.