About This

• User settable high or low limit (30 to 130dB) indication with output to drive external relay module
• Microphone rotates 180° for desired placement
• Meets ANSI Type 2 and EN 60651 accuracy specs compliant to OSHA
• When the sound level exceeds the HI set point the RED LEDs flash and can be seen from 30m 100ft
• Air Velocity/Air Flow meter with telescoping probe designed to fit into HVAC ducts and other small openings