52421

Micropac's Space level Thermostat Controller 52421 operates with external RTD (Resistance Temperature Device) temperature sensor and provides a power switched (On / Off) output within a temperature window.  The RTD sensor is conditioned then controls a high-side MOSFET power switch for an external HEATER.
 
Models 52421 are available with dual channels providing either "OR" or "AND" configurations.
 
Wired combinations of the "OR" configuration device, along with a single channel device, provides a tri-redundancy control system which guarantees both the power ON and power OFF states of the Heater