Integration requirements are typically determined by the other components and setup of the application. Often these requirements cannot be changed and therefore are important to understand early when selecting a capacitive sensor. Capacitive sensors are available for use with input supply voltages of AC, DC, or even AC/DC applications. Common output options available include normally closed, and/or normally open, NPN and/or PNP for V_DC power supply, SCR for V_AC power supply, MOSFET output, relay or analog output, or IO-Link communication. The most common capacitive sensor body styles include square or rectangular housings, or smooth or threaded barrel type housings. Some sensors are designed for flush mounting while others are designed for non-flush mounting, allowing additional sensitivity on the side of the sensing face. Typically, capacitive sensors will only have two connection options to input power and output signal: a quick disconnect (M8 or M12) or a cable with flying leads. The quick disconnect options are popular due to faster sensor replacement and easier connectivity troubleshooting.