Fitment: All spa parts hot tub temperature sensor, Replacement for Balboa spa M7 heater sensor 53605,32016,30042, 30344, 30382, BAL32016, BAL53605, 9711-101, 52016, RME-30344A, 25-250-0344, 59-138-1071, 59-238-1000, 59-138-1070, 5-60-8007, 34-0202-K, 5-60-8013, 34-0202A-K, 25-200-1005, SG32016, 30344KIT, Master Spas X801830 Features: (1) M7 temperature sensor for hot tub is a reliable tool for accurately measuring water temperature in spa pools and hot tubs. If not replaced for a long period of time, it may lead to rapid changes in sensor temperature or wildly inaccurate displays. .