In order to ensure safety, these analog sensors are packaged in the Tube. To protect the analog sensors from damage, the devices are packaged in 20-SSOP (0.154, 3.90mm Width) packages. In order for this sensor to function properly, it has 20 pins. The maximum voltage supplied by this sensor should be 5.5V in the DC circuit. However, the minimum DC voltage supplied by the magnetic switch can be 3V. During operation, the analog sensors can supply 5.5V voltage. The board has a total of 20 pins.