The EDI contains an ambient temperature sensor with a real-time LED display.
On the sides of the sensor are two LED lights that alert you when change happens
If temperature changes sharply in a short period of time, indicative of something paranormal the device will alert you with rapid blinking of the top red LEDs.
TheEDI contains a very sensitive geophone. Built with an accelerometer, the EDI is programmed to pick up the slightest movements or vibrations on the surface it is sitting on.
A small touch on the table the device sits on and the EDI will let you know by lighting up a series of LEDs placed along the bottom. Like a graph the device will light up the amount of LEDs based on the intensity of the vibration or movement.
This can also be toggled on/off by a switch on the device if the device is being used in a hand-held fashion.