Electronic Thermostats REFRIGERATION THERMOSTAT WITH DEFROST 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 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 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 1 hp MODELS N321R: one output for compressor, accepts sensor type NTC, Pt100 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.

ELECTRONIC THERMOSTAT WITH TIMER 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 and thermocouples J, K and T sensors Programmable delay on powerup to prevent simultaneous loads Control relay can directly switch compressor up to...