SP DFMD ( Door Frame Metal Detector ) operations are simple. On Power ON it starts working in SelfDiagonistic Mode. No need of any routine calibration. It is easy to install with just 2 cables & 8 screws.SP DFMD Access Control Panel is password protected. Only Operator can Access. It has LED Display for No ofVisitors and No of Alarms. It also has RED LED Sign with Alarm when any Metal is detected.