* [Overview][1] * [Null Modem Jumper][2] * Receivers * [MC-RX1][3] * [MC-RX2][4] * Transmitters * [MC-TX1][5] * [MC-TX2][5] * * * ## Overview MaxColor Transmitters and Receivers have a [null modem][6] jumper on the bottom of the unit that flips the transmit and receive pins on the RS232 ...