Electronic Thermostats GENERAL COOLING / HEATING • Control with alarm or multiple stages control • Direct switching of compressor or electrical heater • Programmable delay on powerup to prevent simultaneous loads • Alarm functions such as low, high and differential • Accepts sensors NTC, Pt100, Pt1000 and thermocouples J, K, T MODELS N321: one control relay output, low cost version N322: two outputs (control and alarm or second control) N323: three outputs (control and 2 alarms or three control stages) TYPICAL APPLICATIONS: Chambers and Ovens, Food Industry, Commercial Fridges. REFRIGERATION THERMOSTAT WITH DEFROST • Refrigeration control with automatic defrost • Defrost by compressor stop, resistance heating or reverse cycle • Programmable defrost cycle interval and durations • Keeps indication during defrosting cycle • Programmable delay on powerup to prevent simultaneous loads • Control relay can directly switch compressor up to 1hp MODELS N321R: one output for compressor, accepts sensor type NTC, Pt100 or Pt1000 and optional voltage protection for compressor N323R: three outputs (compressor, defrost and fan), monitors 2 NTC sensors (chamber and evaporator) N323TR: similar to N323R plus real time clock for scheduling defrost events, with weekly agenda TYPICAL APPLICATIONS: Cooling Counters, Air Conditioning Systems.

CONTROLLER FOR SOLAR HEATING • Solar heating applications • Operates based on temperature difference between solar collector and storage tank • Uses 2 NTC-type sensors (Included) • Control relay output switches the water circulation pump • Protection against pipeline overheating or freezing • Suitable to processes with cyclic operation requirements • Timer for forced cyclic defrost or liquid stirring • Accepts NTC, Pt100, Pt1000 and thermocouples J, K and T sensors • Programmable delay on powerup to prevent simultaneous loads • Control relay can directly switch compressor up to 1hp • Optional:...