1. 6 infrared lamps, IR distance: 10m. 2. Support motion detection & e-mail alarm & TF card. 3. Support ONVIF protocol. 4. Chip: GK7102. 5. Built-in speaker and microphone. 6. Support 4 people on online APP viewing simultaneously. 7. Support Windows PC clients and web viewing. 8. Support an external Micro TF card storage, up to 64GB.