The Temperature & Hi-Limit Sensor Set is a complete dual sensor assembly designed to maintain both performance and safety in Balboa spa control systems. Featuring separate temperature and hi-limit sensors, this set ensures accurate monitoring and immediate shutdown in case of overheating. With a 4-pin connector for secure connectivity, the temperature sensor includes a 3/8" bulb on a 96" lead for detailed temperature readings, while the hi-limit sensor includes a 1/4" bulb on a 31" lead for reliable safety monitoring.