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ETS SMI-4 4 Channel Microphone Interface Adapter W/ 12VDC Input & Fast Cable Termination
The ETS SMI-4 powers 4 SM1 series microphones and distributes their audio outputs to RCA jacks (or 3.5mm) for connection to equipment with un-balanced line level inputs. This item is ideal for DVRs, remote monitoring applications, and multiple CCTV monitors (with built in speakers).
Features of the ETS SMI-4 microphone interface include simple 12VDC power input, easy cable termination, and circuitry protection via an auto reset type fuse.