PI (proportional plus integral) control action provides accurate, stable and comfortable temperature control. Compatible with series 70 direct-coupled damper / valve actuator like ML7161, ML7174, ML7420 / ML7421series ML7425, ML7984 series, N20010, S10010, M7410E series, CN7505, CN7510 / CN72 seriesCN7220 & CN7234 also VC79 series etc. Backlit LCD to display both setting and measured value. Adjustable Zero Energy Band, On/Off Differential, Proportional Band and Temperature Offset. Analog output can be forced manually to be convenient for installation & commissioning. Optional 2 to 10Vdc or 4 to 20mA direct acting and reverse acting analog output. Selectable internal and external temperature sensor. Wide temperature control range (-20 to 110°C by using external temperature sensor) is suitable for extreme temperature control such as steam and ice water. Watch Dog Timer: to resume the controller from hanging condition. Brownout effect to avoid malfunctioning and care on power ON and power OFF. Pluggable terminal block allows pre-wiring outside of the controller. Compact size and slim design provide elegant and attractive modern style appearance.