Differential temperature controllers for automation of solar heating systems with the ability to prevent freezing in pipes.


  • operation temperature: 0..50°C
  • operation humidity: 10 to 90% RH (without condensation)
  • three sensors and real time programmer


MICROSOL II plus solar heating controller, 230Vac, 16A, 2 auxiliary outputs, SITRAD® Download Datasheet
SB-59 additional high temp sensor, 200°C for Microsol II plus