The TIF SK-5001 PROMAX 80% Tank Overfill Protection Module, for use with the PROMAX RG6000 Refrigerant Recovery Machine. This kit provides an easily installed cable that plugs into the refrigerant cylinder to provide overfill protection of your tank during recovery. If your unit does not have the internal plug already installed, see KT-5002A. This allows for easy, safe recovery of the refrigerant and automatic shut-off of PROVAX when the refrigerant cylinder is 80% full. The cable uses a three pin Brad Harrison connector; refrigerant cylinders must be equipped with a refrigerant level tank float sensor.