This kit combines four Jumbo seven-segment displays below into one giant display, perfect for offices, computer rooms, and shop windows! Not only does it display the time in your choice of either 12 hour or 24 hour formats, it can also display temperature in fahrenheit or celsius! A bonus mode cycles automatically between your choice of time, temperature and OPEN or CLOSED ("CLOSED" scrolls across the display) or a combination of the three. Easy-to-use controls let you set the time and switch modes. You can even put the OPEN/CLOSED switch in a remote location so you can toggle easily from the other side of your shop! And it even has a secret bonus feature: hold down the "HOUR" button and apply power and it will display the AC frequency of your power grid! The entire clock is ready for easy wall-mounting.