RS-232 lead, for use with plug-in Electrocorders (loggers with integral plug pins). This lead has a circular 4-pin mini-DIN plug (male) on one end and a 9-pin 'D' socket (female) on the other end. Length generally 1.5m to 2.0m.
For use with some older (pre 2007) EC116, EC132, EC164, VC32, VC64.