A car black box is a device that monitors and records important driving data and stores it in case of an accident. Typically, it monitors and records the image in front of and inside the car, the time and date. The dvr21c black box is used to record video and audio in a continuous loop. It can record data from up to 2 cameras and microphones at the same time. The signal from the microphones must be amplified by a preamplifier. If the vehicle is involved in an accident, collision, or other events, the event is marked and stored on the SD card. It is then possible to analyze the data, find the causes, and replay the scene. Video and audio are continuously recorded from the moment of switch-on. If the memory is full, the oldest recordings are overwritten by the most recent. The card is locked under the vault door and cannot be tampered with without keys. If the alarm wire is tripped, the recorded video is stored in a separate folder. The stored data will not be erased if recorded on the SD card, the user can delete the data after reviewing the SD card.
For AHD resolution it is necessary to use a special camera with AHD transmission, e.g.: SVC502AHD10, only cameras with 1080 resolution marked AHD10 can be used.
Technical parameters
- Supply voltage: 9-35 V
- PAL/NTSC format
- 2x video input
- 2x audio input
- 1x AV output (direct view from cameras or playback of recordings)
- 1x SDXC card up to 128 GB (not included)
- 1080P Full HD resolution (1920x1080)
- recording mode: when connected to power / manually / motion detection
- recording time intervals.1/5/10/15/30/60
- remote control
- AV output (4pin + RCA reduction)
- dimensions: 110 x 130 x 32 mm
- weight 360 g