As a safety precaution, these analog sensors are packaged inside the Tube. In order to protect the analog sensors from damage, they are packaged in 8-SOIC (0.154, 3.90mm Width) packages. In order for this sensor to function properly, it has 8 pins. This electronic part has 8 terminations. It is possible that the analog sensors are operating with a current of 1mA. Ideally, this sensor should provide a voltage of 3.7V in a DC circuit. The minimum voltage provided by this magnetic switch can, however, be 1.7V. In theory, this sensor can work on 1mA current. This device has 8 pins. There should be no voltage output from the sensor.