Seitron TST12M Solar Control Unit

Microprocessor-based differential controller for solar thermal systems. 4 inputs for PT1000 temperature probes, 4 PWM outputs, 1 auxiliary output for SPDT relay alarm. All temperatures displayed. Configuration of 20 different hydraulic schemes. Self-diagnosis, with visual and audible alarms.
Available functions: periodic activation of loads, night cooling of the boiler (holiday function), heat measurement.

TECHNICAL SPECIFICATIONS
Power supply: 230V~ 50Hz
Power consumption: 4 VA
Sensor type: 4 x Pt1000 Class B DIN
Sensor operating limits: -50 °C .. +200 °C (collector)
-50 °C .. +110 °C (Boiler)
Offset: Adjustable on S1,S2,S3,S4 :
±5.0°C
Output relay contact rating
OUT1 - OUT2 - OUT3 - OUT4: 4x2(1)A max 230V~(SPST)
live contacts

Alarm relay contact rating: 4(1)A max 230V~(SPDT)
PWM Output Signals: Amplitude: 10V ±15%
Protection degree: IP 40
Type of action: 1
Pollution degree: 2
Operating temp: 0°C .. 40°C
Storage temp: -10°C .. +50°C
Dimensions: 156 x 108 x 47 (W x H x D)