Hall effect position sensors manufactured by honey well, gives either digital or analogue outputs. Digital and analogue sensor devices are work under the magnetic field from a permanent magnet or electromagnet. They operates on the type of magnets used. Application: speedmeters; fare meters [auto/taxi]; brushless dc motors; digital energy meters; magnetic card reader; copier/printer/data storage devices; and vending machines/home appliances. Current sensors: are used to check ac or dc current and produce either a digital or linear output. Application: ups; variable speed motor controls; motor overload protection; current monitoring; and energy management systems.