eufy PoE NVR Security System S4 Max + eufy Video Doorbell C31Include: eufy PoE NVR Security System S4 Max + eufy Video Doorbell C31 eufy PoE NVR Security System S4 Max: 16 MP Triple Lens Bullet PTZ Camera: The upper 4K wide angle camera provides a 122 fixed view of the entire scene, while the lower 2K PTZ camera features 8 auto zoom and 360 pan for complete coverage. Auto Framing and Group Tracking: When the bullet camera detects a subject, the PTZ locks on and auto tracks them in sharp, centered close ups from