DFMD (Door Frame Metal Detector) and HHMD (Hand-Held Metal Detector) are security devices used to detect metallic objects, commonly found in environments such as airports, government buildings, and public events to enhance safety and security. Here’s a quick overview:

DFMD: Door Frame Metal Detector

1. Description:
   • A walk-through metal detection system shaped like a door frame.
   • Used to screen individuals for concealed metallic objects.
2. Features:
   • Multi-zone detection to locate the precise position of metallic objects.
   • Adjustable sensitivity levels for different environments.
   • Visual and audio alarms when metallic objects are detected.
   • Can handle a high volume of people efficiently.
3. Applications:
   • Airports, malls, event venues, and high-security buildings.
   • Ideal for areas with high foot traffic.

HHMD: Hand-Held Metal Detector

1. Description:
   • A portable, hand-held device used to conduct detailed scanning of individuals or objects for metallic items.
2. Features:
   • Lightweight and easy to use.
   • Adjustable sensitivity for detecting small or large objects.
   • Battery-operated for portability.
   • Vibrating or audio alerts for detecting metal.
3. Applications:
   • Secondary screening in conjunction with DFMDs.
   • Used in environments like schools, banks, and sporting events.

Comparison Between DFMD and HHMD:

Both devices complement each other, ensuring comprehensive metal detection and enhancing security protocols.