Recorder monitors voltage changes
Powerwatch voltage disturbance recorder is an economical, reliable diagnostic tool that identifies and records voltage fluctuations which can damage sensitive electronic equipment. This stand-alone, self-powered data recorder starts monitoring surges, sags, impulses, outages, and frequency variations as soon as it is plugged in. Voltage thresholds can be set so that only events outside of these thresholds are recorded.
ACR Systems, Inc.