The analog sensors are packaged in the Tube for safety reasons. It is important to ensure the safety of the analog sensors by packaging them in 20-SSOP (0.154, 3.90mm Width) packages. As a result of this sensor's 20 pins, it can be operated properly. For a DC circuit, the maximum voltage supplied by this sensor should be 5.5V. However, this magnetic switch can be used to supply DC circuits with voltages as low as 3V. When the analog sensors are operating, they would provide 5.5V voltage. Pins are 20.