High / Low Alarm Project Kit - 

The HILOW is a simple electronics project that triggers an alarm if the input voltage gets too low or too high. This is perfect for a range of applications that require either a sensor or voltage monitoring. For example the alarm can be used to detect if a door has been left open, the fluid level in a tank or the position of a potentiometer. This kit can also be integrated in to classroom lesson, and is ideal as an example of voltage detection and logic circuits that convert analogue signals into digital signals.