Sundance Spa 6600-166 Temperature Sensor for Hot Tubs and Pool Heating Systems. This temperature sensor is a replacement part designed for Sundance Spa hot tubs. The sensor ensures your spa system runs at the desired temperature. Compatibility: For use with 2007+ J-270, J-280, J-355, J-365 and J-375 Models. 2005+ J-210, J-220, J-230, and J-200 LED Models. 2005-2007 J-325 Models. 2004+ J-335 and J-345 Models. 2003-2005 Del Sol Models. 2002-2003 J-320, J-330, J-340 Models. 2002+ J-300 Models. Also suitable for various systems including 880 Systems (2005+), 850 Systems (1997-2005), 400, 600, 600-S, 750, 800, and 850 Systems. Compatible with Suncoast (1992), Suntub SVDV Systems (496-498), and 850 Systems (1997+). Replaces part numbers 6600-138 and 6600-105. Interchangeable with 6600-182 sensor with box end connectors. For Inground Spas without a skirt, please see 6600-169. Designed for J-300 LCD Series (2002+), J-350, J-360, J-380 (2002-2003), J-355, J-365, J-375, J-385 (2004-2006), and all J-400 Models (2006-2009). This sensor is essential for resolving error display issues such as OH or ICE on your spa display. Easy Installation: Cut off the old temperature sensor and tape the old wire to the new sensor wire, then feed it back to the control board. Condition: New. Origin: China. Part Name: Temp Sensor. Fitment: 6600-167. Material: Non-woven fabric. Color: Black. Package Contents: One Temp Sensor. Only the above package content is included. Other products are not included.