Thermolec can provide thermostats with any given heater upon request. If a different thermostat is to be used, make sure that the output capabilities of the thermostat is compatible with what was ordered. • Active 0-10VDC signal for modulating heaters (Similar to Thermolec’s CTH-291) • Passive Thermistor output for modulating heaters (Similar to Thermolec’s DT-1040 and RT-1030) • Active 24VAC output for staged ON/OFF heaters (Similar to Thermolec’s CTH-010 or CTH-294) • Standard dry-contact thermostats for staged ON/OFF heaters.