Power Disturbance Pager
The 3100 PQPager detects and records electric power disturbances that damage and disrupt PCs, telephone PBX systems, cash registers and other sensitive customer loads. When installed by a utility power quality engineer, the instrument grabs power line sags, swells, transients and interruptions, and promptly reports the problem to pagers. A unique built-in voice-mail-like feature eliminates the need for a computer.
Dranetz-BMI–Inquire R.S. 131