radio design labs. Tx/Rx over CAT5

Description

TX-TPR1A
Active Single-Pair Receiver - Twisted Pair Format-A - Balanced line output
Features:
Single -10 dBV Unbalanced or +4 dBu Balanced Output
Phono Jack and Detachable Terminal Block Outputs
Switch Selects which Pair (A, B or C) Feeds the Output
Signal and Power Pair Pass-Through to LOOP OUT Jack
Powered Locally or Remotely through RJ45 Jack
Fused Local Power Feeds all Modules Connected to RJ45s
Local Power Input on Terminal Block or dc Power Jack
Blue LED Indicates Module is Powered
Daisy-Chain with Additional Format-A Receivers
Studio-Quality Precision Active Balanced Circuitry
D-TPSL1A
Features:
Active Single-Pair Sender - Twisted Pair Format-A - Mini-Jack & Stereo RCA In
D-TPSL1A
Features:
Stereo Audio Input Combined to Mono Output
Input on Dual RCA Jacks or Mini-Jack
Switch Selects which RJ45 Pair (A, B or C) is Fed
Signal and Power Pair Pass-Through between TP CABLE RJ45 Jacks
Remote Powering through Twisted Pair Cable
Fused Local Power Feeds all Connected Modules
Local Power Input on Terminal Block
Blue LED Indicates Module is Powered
Daisy-Chain with Single-Pair or Two-Pair Format-A Senders
Studio-Quality Precision Active Balanced Circuitry.
∆ These two sets of Transmitter/Receiver have been stored without use, but one of the boxes was damaged. I'm selling them because I have no use for them. All 4 units have been used to my knowledge, the boxes are not sealed but the units don't show any signs of even having been removed from the original packaging.