| Model/Scheme | Name | C520M |
| SKU | 1NC-520M4B-US |
| Camera | Resolution | 4MP |
| Lens | 4mm@F1.6 |
| Lens Interface | M12 |
| Sensor | 1/2.7" sensor |
| Light Board | 2 pcs IR Lights,2 pcs White Lights |
| Viewing Angle | Horizontal 110° |
| P & T | Horizontal rotation angle: 355° |
| Vertical rotation angle: 70° |
| Physical Masking | One-Click Privacy Masking Mode |
| Infrared Wavelength | 850nm |
| Night Vision Distance | 10m |
| Illuminance Threshold | Soft light sensitivity: daytime to nighttime < 2Lux; nighttime to daytime > 4Lux |
| Day-night Switching Mode | ICR infrared filter |
| Digital Noise Reduction | 3D Digital Noise Reduction |
| Backlight Compensation | Yes |
| Strong Light Suppression | Yes |
| Screen | Screen Size | 2.8" |
| Resolution | 240 * 320 |
| Screen Interface | SPI 4W |
| Display function | WiFi signal, date, time, weather, temperature and humidity, two-way video call |
| AI Algorithm | Motion Detection | Yes |
| Human Detection | Yes |
| Pet Detection | Yes |
| Gesture Detection | Yes |
| Area Detection | Support area intrusion/area departure/unmanned detection/traffic detection/wandering detection |
| Port/Button | Wired Network Port | No |
| Storage | Micro SD Card (≤256G)/ Cloud Storage/ NVR |
| Audio Input | Built-in high sensitivity microphone |
| Audio Output | Built-in speaker |
| One-Click Call | Audio/Video call button: User 1/ User 2 |
| Compression Standard | Video Compression Standard | H.265 |
| Audio Compression Standard | G.711A |
| Image | Maximum Image Size | 2560*1440 |
| Frame Rate | 20fps |
| Image Settings | Support HD/SD; support mirroring |
| Wi-Fi | WiFi Standard | IEEE 802.1 1b/g/n 1T1R |
| Frequency Range | 2.4 GHz/5GHz |
| Channel Bandwidth | 20MHz |
| Bluetooth Standard | BLW v4.2/5.0 |
| Network Setting | Networking Modes | AP config/ Bleconfig |
| Protocol | TCP/IP,HTTP,DHCP,DNS，MQTT，P2P，RTSP，onvif |
| Voice assistant | Support Alexa |
| General | Material | Plastic casing |
| Waterproof | Non-waterproof |
| Working Temperature & Humidity | -20℃～60℃,humidity <95%(no condensation) |
| Power Supply | DC5V/1.5A |
| Size | 68*68*152 |
| Weight | 266 |
