SM1 Omni-directional Pre-amplified Microphone
By ETS-Lindgren (SM1)
Flush-mount Omni-directional In-wall Microphone
The SM1 is a high quality, 12VDC powered, flush-mount, Omni-directional, pre-amplified microphone for use with DVRs, IP cameras and distributed audio systems. This microphone features a built-in low noise MOSFET amplifier and jumper-selectable line-level (0db), or mic-level (30db) audio outputs.