Mikroe Hall Switch 2 Click features the MEMSIC MHA100KN high-performance, low-power Hall-Effect sensor. This Hall switch is a fully integrated CMOS IC that outputs a high-low signal following magnetic field changing. It works with a magnet and detects the magnet’s close/away position. Two high-quality compact relays allow switching of high voltages and can cut or establish a connection on the main side of the circuit.