1kHz professional calibrator for 0.5" or 1.0" microphones

• Calibrates and verifies sound level meter operation
• Level position switch to select 94dB or 114dB with power on LED indicator light
• LED indicator lights up when power is on
• Durable die-cast aluminum housing generates a 1kHz sine wave at 94dB/114dB to an accuracy of 5% (frequency) and ±0.5dB (94dB)/±1.0dB (114dB)
• Meets IEC standard 60942 1997-11
• Includes: calibrator, (2) 9V batteries, carrying case, and screwdriver
• Operating temperature 32°F to 122°F
• Measures 2.2" dia. x 5.6"L
• Weighs 0.75 lb.