Microphones with Ultrasonic Response
A tiny high quality capsule only 6mm in diameter and 2mm deep. Primo suggest the EM258 as a replacement for the Panasonic WM-61A. Signal to Noise ratio 74dB (Self Noise 20dBA) Sensitivity -32 dB (+/- 3dB at 1kHz, 0dB=1V/Pa) Operating Voltage 3 V (1.5-10 V) Useful Ultrasonic response Mono Module is available Comparison table for the Primo Microphones
A tiny (6 mm dia) high quality Primo EM258 capsule as complete working microphone module ready to build in to a housing or enclosure. No soldering required Requires capsule and cable to be supported 1.0 metre screened cable. 3.5 mm stereo plug, the signal is sent equally to both the left and right channels. Primo EM258 Data Sheet EM172 Mono is available.
6mm Microphone Capsule Holder. A convenient means of mounting tiny capsules, the rubber also provides some vibration isolation. Internal diameter 6mm External diameter 10 mm Height 10mm Maximum width 17mm Suitable for Primo EM258 and other 6mm capsules.