Extech SL130G Sound Level Alert with Alarm

Display: 4.6 x 3.125" multifunction LCD

Frequency bandwidth: 31.5 Hz to 8 kHz

Microphone: 0.5" Electret Condenser Microphone (remoteable)

Measurement ranges: 30 to 80dB, 60 to 110dB, 80 to 130dB

Frequency weighting: A and C (Programmable)

Response time: Fast (125ms) / Slow (1s) (Programmable)

Resolution: 0.1dB

Alarm output: 3.5mm Mono Phone Plug, Maximum: 3.4mA @ 5 VDC

Minimum Output Voltage: 2.5 VDC

Power: AC/DC Adaptor for full functions; 8xAA batteries for monitoring function only without LED alert

Dimensions / Weight: 8.75 x 7.1 x 1.25" / 0.63 lbs. (22 x 18 x 3.2mm / 285g)

Complete with 100-240V AC 50/60Hz adaptor, microphone wind cover,

and built-in wall

Manufacture: Extech USA

Datasheet