Main image and detail shots of the MDVR-504.
Recording · MDVR & JFD
MDVR-504
MDVR-504 (MR9504E-B1 / 9504E) 4-channel 1080P car video recorder (dual SD card player)
Send the vehicle type, quantity and market — we reply with a configuration and price within 24 hours.
Key features
- 4-channel 1080P mobile DVR with SD card storage (card machine), no hard disk
- 4CH 1080P AHD / TVI / CVI / CVBS + 1CH IPC five-in-one video input, 4-way 25fps real-time encoding
- H.265 / H.264 dual encoding: about half the storage of H.264 at the same image quality
- Dual SD card slots, up to 512GB per card (folder parameter lists 2 x 256GB, to be confirmed)
- 9-36V DC professional vehicle power supply with under-voltage / short-circuit / reverse-connection protection
- Smart power management: low-voltage automatic shutdown, low consumption after flame-out
- Built-in supercapacitor: no data loss or card damage on sudden power outage
- Video output: 1 x VGA + 1 x CVBS (parameter.txt: 1 aviation + 1 VGA)
- Camera input: 4 x M12-4 aviation connector (aviation connector); IPC: 1 x M12-6 aviation connector
- GNSS GPS / BD / GLONASS built in, high sensitivity, fast positioning, GPS drift suppression algorithm
- Built-in 4G module (LTE / HSPA / WCDMA); WiFi module optional (802.11b/g/n, 2.4GHz)
- Interfaces: CAN, RS232, RS485, TTL, 1-WIRE, speed pulse, 9 alarm inputs, 2 alarm outputs
- Built-in G-sensor: harsh acceleration / deceleration / turning, rollover and collision alarms
- Reversing image ranging assistance; image horizontal / vertical mirror adjustment
- ADAS / DSM / BSD active safety on the AI version (MA9504E): LDW, HMW, FCW, fatigue, distraction, smoking, phone call, BSD 3-level alarm with voice prompts
- Supports Yunweibao 3.0 App setup and mouse operation, up to 8 center servers (JT/T808-2013 / 2019, JT/T905, Su Biao / Guangdong Biao / Sichuan Biao)
- Chinese / English OSD; typical consumption AVG 9W, static 12V@3mA
- Housing size 142 x 152 x 32 mm (factory SPEC 142 x 153 x 33 mm)
- CE / RoHS / FCC, 1 year warranty
Ordering notes
Points to confirm before production so the unit arrives ready to fit.
- This model is an SD card machine (without hard disk); the storage capacity directory parameter is written as 2×256GB, and the factory SPEC is written as a single card up to 512GB. Please confirm the actual configuration before placing an order
- Confirm whether you want the normal version (MR9504E) or the AI active safety version (MA9504E, including ADAS / DSM / BSD)
- Confirm options: GPS/Beidou, 4G, WiFi, IPC camera, CAN, TTS speaker, intercom handle, alarm button
- It is not equipped with a remote control by default. If you need a remote control, please specify separately
- Confirm the number of cameras, cable length and connector type (audio and video input is M12-4 aviation connector)
- Confirm whether the ministry standard agreement (JT/T808-2013/2019, JT/T905) and platform integration are required, and who will provide the SIM card?
- Confirm the power supply method (ACC ignition wire/normal power) and whether delayed shutdown is required
- Confirm quantity, packaging and printing requirements in advance.
Installation & usage
Voltage, wiring, sealing and maintenance guidance for the installer.
- The power supply must be between 8-36V (12V or 24V is recommended); the red wire is connected to normal power, the orange wire is connected to ACC, and the black wire is grounded. The positive and negative poles cannot be reversed
- The host must be installed horizontally and fixedly, with an inclination angle of no more than 30 degrees, and cannot be installed suspended in a position subject to long-term vibration
- The installation location must be waterproof, shockproof, and interference-proof, and away from air-conditioning outlets and in-car audio-visual and intercom equipment
- The GPS antenna should be placed horizontally, with no obstruction above it, and at least 50cm away from the camera and recorder; the 4G antenna should not be bundled with messy wiring harnesses
- The power must be cut off before inserting or removing the SIM card or SD card to avoid data damage
- Unused channels must be deactivated in the menu, otherwise video loss alarms will continue to be reported
- Regularly check the recording time, whether the picture is complete, whether the loop coverage is effective, and export important videos for backup in a timely manner
- The fuse of the fuse must be above 10A; the diameter of the extension cord should not be less than 1.5mm², and the diameter of the signal line should not be less than 0.5mm²
Knowledge base
Specification guides for this kind of product
Written by our engineers for buyers comparing specifications, not slogans.
Buying guides
MDVR Buying Guide: How to Specify a Mobile DVR
How to choose a mobile DVR: channel count, SD versus hard drive, H.264 versus H.265, GPS and 4G, temperature ratings, UPS power and how much footage to keep.
Read article
Installation
The Wiring Mistake That Kills Monitors in MDVR Installations — And the Zero-Cost Fix
Why monitors fail months after an MDVR installation: power feed through the shared aviation cable, and the wiring change that isolates the two.
Read article
Technology
25, 30, 50 or 60 fps: What Actually Limits a Vehicle Camera’s Frame Rate
Why a camera that can run at 60 fps ships at 25, what the analogue and processor limits are, and how to check a frame rate claim.
Read article
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View detailsNeed a quotation for the MDVR-504?
Send us the quantity, the vehicle or application, and the destination market. We will confirm the specification and quote within 24 hours.