1. Improved digtal and analog mixed circuit, hi stability;2.6 detection zone, the sensitivity of every zone can be adjusted individually.3. The real-time sensitivity of every zone can be displayed together during. Detecting.4. Optimized detection system, eliminate non-uniform detection, anti-interference5. Several metal display can be parallel working together.6. LED matrix display, easy to read.7. Functional operation system, cascading menu, easy to use.8. Designed for universal AC power supply(full range)