ASM-2 Analog Sound Pressure Level (SPL) Meter

Highly accurate easy-to-read analog VU meter. Features include seven sound level range settings between 50dB and 126dB @ 32Hz -10KHz; selectable A or C weighting and Fast or Slow response; RCA output jack for connection to test equipment; internal battery tester; built-in linear, calibrated omnidirectional electret condenser microphone.