EIB bus is with being close detection circuitry

The utility model discloses a EIB bus is with being close detection circuitry, enlarge module, rectifier module, differentiating circuit module, comparator module including CPU module, infrared modulated wave module, infrared receiver module, interchange, the utility model discloses an in cut out dimension is 2.56mm, can detect the 20CM reflected signal close apart from the staff, the utility model discloses the device has adopted to exchange and has enlargied the form that reaches differentiating circuit, has enlargied the approach signal who changes betterly.