Upgrade 6600-166 Temperature Sensor For Sundance Spas And Jacuzzi Hot Tubs J300 To J365 And More Series With Curled Finger Connectors And 6540 228 O Ring Green Replacement Part For Your Spa Temperature Control
✔️ 1x sensor + 1x O-ring included; single-pack replacement
Upgrade 6600-166 temperature sensor for Sundance Spas and Jacuzzi hot tubs. This single-pack replacement is designed for J300-J365 series and older LX systems, ensuring accurate temperature readings and reliable heating control in everyday spa use.
✅ Replaces 6600-134, 6600-138, and 6600-105; fits many Sundance models
✅ Curl finger connectors compatible with J300-J365 and LX series
✅ 6540-228 O-ring included for a tight seal
✅ 240V rated, 105°C temperature resistance for hot tub service
💡 What is a spa temperature sensor used for in hot tubs? This handy component keeps the spa's temperature readings accurate, guiding heaters and cooling cycles for safe, comfortable soaks. - Maintains accurate water temperature readings for reliable control - Helps prevent overheating and wrong heater cycles - Simple DIY replacement for common spa models - Works with standard O-ring seals and compatible control boards