This 4-channel, economical single-rack space display shows PPM response (-15 to +12 dB). Remote, shared power supplies let you mount these bright 3-color meters directly under video monitors or critical audio circuits with no possibility of magnetic interference. Multiple color, ten-segment displays are visible even in bright sunlight.High impedance non-loading inputs accommodate balanced or unbalanced input signals. Two-piece, quick release screw plug connector per input. Optional Accessories: rack adaptors. WA100-1 power supply required (sold separately).