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 2 wires (will also replace some 3 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