Gecko inpool temperture sensor, used in Microspa , SSPA and MSPA gecko controllers (NOT MSPA-1 white metal box) also S-Class M-Class spa builder controllers
50mm bulb length and 10mm diameter, 3m wire length
4 pin connector with 3 wires (will also replace some 2 wire sensors used on the same models)
identical to: 5-60-6019 , 5-60-7014 , 9920-400262 , 34-0203D , 9920-400346 , 9920-400723 , 9920-400342