The Honeywell SS30AT is a versatile, bipolar, Hall-effect sensor. These sensitive magnetic sensors offer reverse polarity protection and deliver stable output over a -40 °C to 125 °C [-40 °F to 257 °F] temperature range. Operation from any dc supply voltage from 4.5 Vdc to 24.0 Vdc is acceptable. These sensors have been designed with the latest technologies to provide reliable, cost-effective solutions to many commercial, medical, and /or consumer applications requiring motor control and RPM sensing. Mounts directly on the electrical traces of a PCB.