See also:
EC36/18 can be used for knock gnd. Knock2 is available on request, just request in the WebShop order note (you can also request other special wiring, like serial port on endplate mounted DSUB9 female that gives you some extra pins for your favorite functions).
Chart of Analog Inputs on page 2:
http://www.vems.hu/download/v3/doc/RescueKit.doc
The standard EC18 wiring (since 2009-09-29):
See also