This item is a replacement part for the Ice Master G20 Gen 2 Model.
The Gen 2 model has the duotight tee on the front of the unit. Whereas the Gen 1 had a 1/2" ball valve on the left/right hand side.
Icemaster G40.1 & G20 - Gen 2 - Replacement Temperature Controller and Temperature Probe Socket
This item is a replacement part for the Ice Master G20.1. It comes with a socket for the temperature probe.