Giuseppe, the 37-pin remote-control connector works as follows: pin 01 - +12V (is provided by the Teletron) pin 02 - Gnd pin 03 - n(ot) c(onnected) pin 04 - nc pin 05 - nc pin 06 - nc pin 07 - 10Hz digit (binary value: 1) pin 08 - 10Hz digit (binary value: 2) pin 09 - 10Hz digit (binary value: 4) pin 10 - 10Hz digit (binary value: 8) pin 11 - 100Hz digit (binary value: 1) pin 12 - 100Hz digit (binary value: 2) pin 13 - 100Hz digit (binary value: 4) pin 14 - 100Hz digit (binary value: 8) pin 15 - 1kHz digit (binary value: 1) pin 16 - 1kHz digit (binary value: 2) pin 17 - 1kHz digit (binary value: 4) pin 18 - 1kHz digit (binary value: 8) pin 19 - 10kHz digit (binary value: 1) pin 20 - 10kHz digit (binary value: 2) pin 21 - 10kHz digit (binary value: 4) pin 22 - 10kHz digit (binary value: 8) pin 23 - 100kHz digit (binary value: 1) pin 24 - 100kHz digit (binary value: 2) pin 25 - 100kHz digit (binary value: 4) pin 26 - 100kHz digit (binary value: 8) pin 27 - 1MHz digit (binary value: 1) pin 28 - 1MHz digit (binary value: 2) pin 29 - 1MHz digit (binary value: 4) pin 30 - 1MHz digit (binary value: 8) pin 31 - 10MHz digit (binary value: 1) pin 32 - 10MHz digit (binary value: 2) pin 33 - nc pin 34 - ? (unknown) pin 35 - ? pin 36 - ? pin 37 - ? Note: provide a logical '1' on the data pins by pulling up to 12V through a 10k resistor. Pull the pin down to Gnd to provide a logical '0'. The data pins need 12V, 5V will not work. Good luck! 73, Charlos, PA3CKR 2013/12/9 Giuseppe Perotti Hello, I found on your page the project of the TE704 remote control, so I hope you can help. I need the pin assignment of the TE704 37-pin remote control connector. In the schematics/manuals I have I was not able to find it. Thanks in advance. -- 73 de I1EPJ