This Microcontroller based DC Low voltage cutoff unit is used to monitor the line DC voltage (110Vdc) and give a control output whenever the line voltage falls below the set level i.e. 103VDC with hysterisis. The unit is powered by auxiliary power 24V DC. The sense voltage is measured and displayed on the 4 digit display. The microcontroller continuously monitors the DC sense voltage of 110Vdc. If the DC line voltage is within the range, relay status LED is GREEN. When the line voltage falls below the SET value, the display will start blinking and after the preset delay, relay status will change and the status LED glows RED. The hysterisis of 0-15 Volts and delay of 0-500 seconds can be adjusted through front panel keys. The unit is housed inside an attractive ABS plastic enclosure.