The Galaxy Audio CM-140 CHECK MATE is a lightweight, 9V battery-operated SPL meter with a built-in electret condenser microphone and a large display featuring low, medium, and high level range readouts. This high-tech but inexpensive meter offers selectable fast and slow response times, AC signal output, and large, easily accessible selector buttons.

• Lightweight, miniature SPL meter with 0.1 dB resolution
• Built-in electret condenser microphone with windscreen
• Large level range display with low, medium, and high level readouts
• AC signal output
• 1/4"-20 screw mounting point (ask us if you need a tripod!)