"The SR17 Series Hall effect vane sensor is designed for position and speed sensing and is offered in a side mount package. The cost effective SR17 Series sensor is tailored for fitness and information technology applications. They are well suited for use in moderate electrical, chemical, and mechanical environments.","The SR17 Series sensors contain an internal magnet and Hall effect sensor mounted in a side mount twin tower configuration. In application, a customer supplied ferrous target passes between the tower gap, interrupts the magnetic field, and switches the digital state of the sensor.","These robust solid state Hall effect sensors are housed in an environmentally sealed plastic package. The Hall effect sensors provide highly accurate and repeatable performance in environments in which dirt, dust, or stray IR light might affect the performance of optical solutions. The sensor package is constructed of rugged polyphthalamide material and is mechanically interchangeable with our standard optical sensors."