2-Way Audio, Motion Sensor, Night Vision, Weather Resistant, Zoom | 2-Way Audio, Built-in Microphone, Day/Night Mode, Microphone, Night Vision, Recordable, Remote Access, Smartphone Compatible, Visual Alert, Wall Mountable, Weather Resistant | Built-in Speaker, Microphone, Motion Sensor, Night Vision | 2-Way Audio, Audio Recording, Battery Backup, Built-in Microphone, Built-in Speaker, Microphone, Motion Sensor, Night Vision, Remote Access, Smartphone Compatible, Wall Mountable, Weather Resistant |
Wireless (Wireless Network Transmission) | Wireless (Wireless Network Transmission) | Wired (Cable Network Transmission) | Wireless (Wireless Network Transmission) |