The MS3D is a standard differential solar pump controller for solar pool heating.
It can be used on any solar pool heating system and is designed to give you year round automatic control of your system..
The MS3D has pool and roof sensors that detect the suns heat and compare your pool temperature to your preset comfort temperature to decide when to heat the pool..
AUTOMATIC MODE For full automatic operation, simply plug it in and switch on. When the MS3D senses the suns heat it compares it to the pools temperature and your preset “comfort ” temperature and decides when to heat the pool. Whenever the unit is powered up, there will be a delay of 2 minutes before the solar pump is activated. The unit will then run for at least 6 minutes to reset the pool temperature sensor.