... to Install, Simple to Operate 3,High Sensitivity. Door metal detector 1. water proof 2. LED light and sound alarm ... 3. LCD screen 4. networking: optionalDoor metal detectorModel No.: AT-300BPerfect weather-proofing design for outdoor ... 1CE Certificate; ISO 9001:2000 Certificate, National standardFunction: Walkthrough Metal Detector can easily detect weapons, such as knife and gun, and ...