• Support RS485, Wiegand34 protocol • 13.56MHz(Mifare) • 125KHz(EM-ID) • Water-proof design • An indicator light with red, green, and blue light • Watch dog function ensure device free from halting • Surface mounted installation • IP66 (Apply silica gel to gaps between the device and the wall. Liquid sodium silicate is recommended. For details, see the quick start guide.)