See also:

DTMF suffix dialing
DTMF suffix dialing can be used for gaining access to network services or for controlling devices, e.g., to make a remote inquiry of an answering machine. The DTMF code is needed for this purp ...

Tachometer
Always avoid engine speeds in the red warning field. In this range, the fuel supply is interrupted to protect the engine. ...

Heat image
The image shows the heat radiated by objects in the field of view of the camera. Warm objects have a light appearance and cold objects, a dark appearance. The ability to detect an object depen ...