Adcon Telemetry 4-20 mA Radio Receiver & Transmitter. Model 4-20RLSST FCC # NKRWDC900-1 Made in U. Powered by SixBit's eCommerce Solution. The item "Adcon Telemetry 4-20 mA Radio Receiver & Transmitter Model 4-20RLSST" is in sale since Tuesday, January 14, 2014. This item is in the category "Consumer Electronics\Radio Communication\Other Radio Communication".The seller is "surplusmeisters" and is located in Virginia Beach, Virginia. This item can be shipped worldwide.