6 digit Digital Clock/Stopwatch MXA070 is a pre-assembled circuit complete with driver for use with a big digit display (up to 225mm). The two selectable modes are 24 hour clock with day, date, month and year, or timer/stopwatch mode - up to 23hrs 59mins 59 secs. Power supply requirement is 12V 115mA, and connections for a 3V battery backup are also incorporated which will retain all settings (without display) in the event of power failure. Includes 2 open collector outputs (up to 50mA max. per channel). PCB size 100 x 120mm