Since the Panasonic PIR sensor is packaged inside a TO-5 can it is shielded from electromagnetic interference transmitted by nearby components. This helps eliminate electrical noise. When customers use a discrete solution, they will need to design voltage amplifier and comparator circuits which must be located on the PCB, left unshielded and susceptible to EMI effects. If the user would like to use Panasonic’s sensor next to a WiFi or Bluetooth antennae, test data can be provided from the factory, performed with these frequencies in close proximity to the sensor.