Go-Cal AC Adapter NEMA, 100-240V Back Catalog number: 811-9918-02 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GF37TQ Filter, Tissue Quartz, (99.90% retention of 0.3µm Price on request 811-1004-01 PM-2.5 Impactor Kit, Replacement for Models 810-10 Price on request 911-0502-NO-R Single Unit Charger w/ Power Adapter, USB Gilibrat Price on request