Replacement Hi-Limit sensor for Hydro Quip and Gecko brand Electronic Controllers Models MSPA-1, MSPA-4 and TSPA. OEM Part Numbers 34-0201-K and 9920-400122. Cable is 14 inches long with a 4-Pin 3-wire connector.
SpaGuts P/N: 25-150-0203
This Gecko Sensor is also a replacement option for the following part numbers: 5-60-6008, 5-60-6001, 9920-400705, 59-337-1105, 59-355-1015
This sensor is also compatible with the following control system: Baja Spa SC650 ECO1 System Model Z0BKBC-0300LEX CODE BAJ01-4022-32
This item comes with a 90-Day limited warranty, and is NON-Returnable.
When selecting your spa or hot tub sensor, it’s critical that you go by part numbers and not just by appearances. The part number on a sensor can be found on a white or silver label located directly on the senor cable (The ID label may also be located on the casing of the sensor). Buy based on this part number. Do NOT purchase a hot tub sensor just because it looks the same as the one you’re replacing. Spa and hot tub sensors can look identical, but have different resistant and material to work with different spa and hot tub controllers or circuit boards. ALSO pay attention to the type of cable plug that is on the end of the sensor cable. Different spa and hot tub sensors use a certain type of cable plug that plugs into compatible spa and hot tub controllers or circuit boards.