The Jacuzzi 2000-684 flo-thru heater assembly has the following features and specifications.
Stainless Steel: Yes
Heating Element Included: Yes
Kilowatt Rating: 5.5KW / 1.375KW
Voltage Rating: 240V / 120V
Temperature Sensor Included: No
Hi-Limit Sensor Included: Yes
Pressure Switch Included (A.K.A. Flow Switch): Yes
Number of Threaded Taps: 2
Threaded Tap Location(s): Pressure switch tap (center) approximately 8-1/4" from leading end @ 12 O'Clock and sensor tap approximately 13" from opposite leading end @ 12 O'Clock.
Tail Pieces Included: Yes (removable)