Specifications:

High signal-to-noise ratio, greater than >75 dB at 1 kHz (1 Pa, A weighted)
Output noise (A weighted) = 19 dB
Low handling noise.
Omnidirectional
Output Impedance : 1800 ohms
Frequency response 30-20,000Hz
Sensitivity -32 dB at 1 kHz (0 dB at 1v/Pa) load=2K ohms, Vcc=3 V
Maximum Sound Pressure Level: 125.0 dB SPL
Power Requirements: Regulated nominal +3 Vdc (1.5 Vdc to 10 Vdc)
Sealed against humidity
Element mounted in rubber boot and foam vibration isolator
Designed specifically for automated nature recording
Suited for various outdoor mounting techniques
10' cable
Includes foam windscreen

CAUTION:
The EM158 ECM must be operated at or near its nominal operating voltage. Operation at too low a
voltage may produce excessive self-noise.

Bedford Technical
Applied Environmental Systems
817-360-5035

updated 07/29/2010