In order to protect the sensors, they are packaged in a Tube. To protect the analog sensors from damage, the devices are packaged in 20-TSSOP (0.173, 4.40mm Width) packages. There are 20 pins on this sensor for proper operation. DC circuits should have a maximum voltage of 5.5V. DC circuits with this magnetic switch can supply 3V as a minimum voltage. Analog sensors are capable of supplying 5.5V voltage when operating. The board has a total of 20 pins.