Inter-M's PM-6228 is an 8 channel 70/100V speaker line monitor Panel. It permits 8 separate 70/100v signals (speaker lines/ amplifier outputs) to be monitored. Ideal for large paging environments such as government offices, educational facilities, hospitals, malls, campus, transportation, correctional facilities and a variety of commercial and industrial applications. Eight 10 segment LED VU meters visually indicate the signal strength on the 70/100V speaker line. A built in front panel speaker with simple push button selector allow listening of the audio on the speaker line. The device is powered from 24V DC, and mounts into 2 units of 19-inch rack space.