WiFi Security 3G 4G Driver Monitor CCTV Mdvr with GPS Tracking. Multi-Network Connectivity: Supports WiFi, 3G, and 4G for reliable video transmission and GPS tracking. High-Definition Recording: H.264 compression supports 4-channel 1080P video input and recording. Robust Storage Capacity: Supports up to 2TB HDD and 256GB SD card for extensive data storage. Advanced Alarm System: Features I/O, speed, G-sensor, motion detection, and video loss alarms. Driver Management Features: Supports driver sign-in/out time attendance and bi-directional voice communication. Patent UPS Protection: Includes patent UPS power-off protection design for data safety during power loss. Flexible Power Input: Accepts +12V@2A power input with +12V@2A and +5V@2A power output options.