The Pentair 42001-0060S is a Water Pressure Switch. It is compatible for use with the ETi 400 High Efficiency Heater. It is a genuine Pentair product.
WALL HOSE COMPLETE W/FIT TINGS
Price: $95.87
3.5" White Inlet Faceplate Cover with Screw Holes
Price: $1.60
Washer 3/8?1 - 7/8?1/32
Price: $1.37
WASHERS ADJUSTMENT #266 BULK FOR VAC WHEELS
Price: $2.22
Electrochlor Reducing Bushing
Price: $14.13
Ful Flo 3-Way Valve Ring
Price: Discontinued by Manufacturer
Waterking Tablet Chlorinator
Price: $129.11
Supaskimmer Face Plate Assembly
Price: $108.43