Motorola PMLN5957A Single Wire Surveillance Earpiece, in-line Mic and PTT, for use with SL 7000 MOTOTRBO handheld radio. Works great, barely used. In-line push-to-talk and microphone combined on a single wire make communication more covert for security personnel.
PLEASE NOTE this is a 30 FEET in length that is pulled out from the roll and then package in an anti-static zip bag (see picture). Most people need only a small amount of solder instead of a whole roll and at a fraction of the cost.
GE IFS D2315 RS-485 (4-Wire) TRI-STATE DATA TRANSCEIVER The IFS D2315 series data transceivers provide drop and repeat transmission of full-duplex (4-wire) EIA RS-485 data signals over two optical fibers. The transceivers feature optical "drop & repeat" capability that allows the user to easily configure the network operation. The transceivers are transparent to data encoding allowing for broad-range compatibility.
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