Product Feature: * Replacement Part Number: 6600-134, 6600-138 and 6600-105. * Function: A defective temperature sensor might cause the problem of rapidly changing temperature or wildly inaccurate displays. Replacing the temperature sensor can help fix the problem and ensure proper operation of your hot tubs. * 12 Feet Wires: Long enough to go from the sensor location to the control box. When installing, cut the old sensor head off, tape the new sensor wire (connector end) to the old wire, and pull it all the way through. * Package Included: Comes with a 6600-167 Temperature Sensor and a 6540-228 O-ring. .
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