Home ProductsMobile HD DVR

AHD 720P Hd Digital Video Recorder H264 4 Channel 3G GPS PAL / NTSC TV System

Customer Reviews
Your video People Counter is very good with over 98% accuracy !!!

—— Bob

The SD card MDVR system are very good.Very nice to work with you.

—— Cathy

I like your camera system, I will buy more in the future

—— Joe

I'm Online Chat Now

AHD 720P Hd Digital Video Recorder H264 4 Channel 3G GPS PAL / NTSC TV System

AHD 720P Hd Digital Video Recorder H264 4 Channel 3G GPS PAL / NTSC TV System
AHD 720P Hd Digital Video Recorder H264 4 Channel 3G GPS PAL / NTSC TV System AHD 720P Hd Digital Video Recorder H264 4 Channel 3G GPS PAL / NTSC TV System AHD 720P Hd Digital Video Recorder H264 4 Channel 3G GPS PAL / NTSC TV System

Large Image :  AHD 720P Hd Digital Video Recorder H264 4 Channel 3G GPS PAL / NTSC TV System

Product Details:

Place of Origin: Guangdong, China (Mainland)
Brand Name: Visionmaster
Certification: CE FCC
Model Number: VM-1504-HD

Payment & Shipping Terms:

Minimum Order Quantity: 1 Set/Sets
Price: Negotiable
Packaging Details: Neutral packing
Delivery Time: 3-5 work days for samples,15-30 work days for large orders
Payment Terms: T/T, Western Union,PayPal
Supply Ability: 2000 sets / month
Detailed Product Description
Compression: H264 4channel Weight: 0.36kg
Dimension: 112(W) X36(H) X138(D) Mm TV System: PAL / NTSC
Storage: 2*128GB SD Card Warranty: 12 Months
Language: Chinese/English Power Input: DC 8V~36V
High Light:

mobile digital video recorder


multi camera car dvr

H264 4 Channel AHD 720P Mobile HD DVR 3G GPS PAL / NTSC TV System DC 8V~36V


Video CompressionH.264
OSDOverlays information such as date time and vehicle ID
GUIGraphical User InterfaceSetup system parameters with the remote control.
Video Record SystemVideo Input4CH 720P AHD input,aviation connector, 1.0Vp-p, 75Ω
 Video Output1 CVBS, 1.0Vp-p, 75Ω,Aviation,Support 1CH Full Screen,4CH Screen
 PreviewSupport 1 channel and 4 channels preview.,Support Manual/Alarm Trigger full screen preview
 Resolution720P/D1/HD1/CIF, MAX:4 channels of 720P and 4 channels of D1
 Video Quality1-4 levels, 1 is the highest level.
 Video Standard

PAL: 100f/s , CCIR625 line,50field;
NTSC: 120f/s, CCIR525 line,60field;
CIF: 256Kbps ~ 1.5Mbps, 8 level video quality optional;
HD1: 600Kbps ~ 2.5Mbps, 8 level video quality optional;
D1: 800Kbps ~ 3Mbps, 8 level video quality optional;
720P: 4Mbps-6Mbps, multi level video quality optional

 Record ModeThe default setting is auto recording after power on. Timed recording, alarm trigger recording and manual recording are supported.
AudioAudio Input4CH ,Aviation Plug
 Audio Output1CH,Aviation Plug
 CompressionG.726 compression, 8KB/s speed

AHD 720P Hd Digital Video Recorder H264 4 Channel 3G GPS PAL / NTSC TV System 0AHD 720P Hd Digital Video Recorder H264 4 Channel 3G GPS PAL / NTSC TV System 1

AHD 720P Hd Digital Video Recorder H264 4 Channel 3G GPS PAL / NTSC TV System 2



Q:When Device issue appear,you are confused on how to solve it.
A:Check Device Item No & Firmware Version,sent back to us with detail description of issue.Our Technical Team will handle it.
More detail you described,easier for us to solve it quickly.
Q:Video Output Lost
A:1.Check situation of DVR:Device Input Power;Power Cable Connection;GND Connect to battery;fuse;RED & Yellow Cable of Power must connect together;
2.Check the Screen Power or Check if the Screen change to related AV Channel;
3.Check the connection of Video Output & Screen Cable;
Q:Device keep Rebooting
A:1)Check working power,if low power device will keep rebooting;
2) HDD/SD Card error, remove storage device and turn on device checking;
Q: If the video input interface of the device and camera is different.
A:The DVR is using 4PIN type port, the camera is BNC port or Aviation, if it is different, please use the X-over to connect, or connect according to the DVR Line sequence definition
Q:Device on with HDD but not recording;
A:1)Check SD/HDD if format;if not please enter Main GUI--System Set--Format,format HDD/SD Card;
2)If close Recording ,or set Timed Recording mode, if yes it won’t recording if not the time set
3)If the HDD is connect well, if the HDD/SD light is on.
Q: Video files lost, or there is no video files at a certain period time.
A: 1. Analysis the lost video and ensure the lost time period.
2. Confirm if the DVR was opened at that time, such as crashed midway park, loading and unloading ect. And the device didn’t set the delay recording
Q: Can not control the Car PTZ, can not rotate to all direction.
A: If the agreement and Baud rate of the PTZ is setting right,if the address code is corresponding, if the video channel is setting to max when control the PTZ. Like if is control the first channel, then must set the first channel image to be max.

7.1 GPS related FAQ

Q: With GPS but no GPS coordinate Information
A:1)Check if GPS module exist;
2)Check GPS Antenna connection,suggest install on the outside place with strong signal;
3)If testing in office, suggest put GPS Antenna out of window;
4)If working environment not good will related to no GPS Information or wrong information;
Q:Deviation of GPS Location on Map?
A:The signal is effective if the GPS module has been positioning, there are so many reasons caused bias, government restriction, permissible error, GPS signal break off, The actual satellite map error occurred for the security, GPS Correction can solve the problem.

7.2 3G Wireless Module related FAQ

Q:If using 3G ,what should we concern?
A:1)Choose inside wireless module WCDMA,EVDO,TD-SCDMA, relative module setting is different then SIM Card is different, please make sure the module is corresponding with the SIM Card.
2)If Server IP & Port set correct,if 3G signal strong for dialing;3G dialing successfully or not;
3)Check 3G Antenna connection,dialing will be failed if 3G signal too weak;
4)Check SIM Card 3G Flow
Q:When meet device offline or no video,what should be done first?
A:1)Press INFO key to enter the system Info page,check if SIM Card exist,3G signal and dialing status,Antenna connection,Check SIM Card 3G Flow,change to a new SIM Card check again;
2)3G Signal strong but dialing fail,check if center IP & Port set correct;
3)Check if Device ID already be occupied;
Q:3G Signal is intermittent, video get stuck ?
A:At present, signal coverage of the WCDMA and EVDO is very wide, but still there are some mountain area signal is weak, this will influence. Then check if the frame rate in Sub-stream setting is too high.
Q:WIFI Signal 60/100,connect failure;
A:General condition, connection is no problem when the signal intensity up to 60/100 if WIFI setup are right. If the device can not be found in LAN, then you should check if setting SSID and password, IP Address, besides, check the Encryption Type and authentication mode if setting according to requirements.

7.3 Client Software FAQ

Q:Device working but can not see Vehicle and video on client software
A: 1)Check if Center Server running and device Number if using;

2)Check Server IP and Port parameter setting;

3)Check is using 3G or WIFI for connecting, if 3G check the 3G Model WCDMA or EVDO and related SIM card,3G antenna connect normally/APN setting/Center No. setting;
If it still can not work,please offer the most detailed information to us for technical support
Q:Device Online but can not see video
A:1)Please set Low Sub-stream,when sub-stream set high it will effect the transmission because of the network;
2)Network environment not good;
Q: Device works well in the Client, but cannot see the video a period time later.
A:1.Check if connect to server successfully on device, if dialing probably SIM Card no 3G Flow,change another SIM card for testing;

2.Check if Device Number be changed,if yes,need add device to server again;

3.If still can not view video after previous 2 steps,please check if 3G module error;

7.4 Other related questions

Q: Video Lost in certain channel?
A: Possible reasons are as follows
1. This channel has no video input
2.The camera of this channel breaks down or work abnormality
3.If the camera takes an electricity power from the equipment directly, may be the
equipment’s electric voltage isn't enough to make camera work as usual;
d) The cable that links this channel has problem
Q: Can’t playback files on PC successfully?
A: Possible reason is as follows:
1.Have never chosen a record file or document path; please choose the path that records file first before playback.
Q: Remote control not works?
A: Probably of the reasons are as follows:
1.The remote control didn't pack battery;
2.2.The remote control damages;
3.Device damages.
Q: During playback, the map doesn't show?
A: Possible reasons are as follows: Net cable did not connect to PC; Net works, but the computer can not get to the Internet;
Q: When SD card and HDD records, How is the record coverage?
A: SD card and HDD will record circularly for each other. When they are full, they will delete the original video records respectively.

Contact Details
VisionMaster (Shenzhen) Industrial Co., Ltd.

Contact Person: Abby Cai

Tel: +8618312486160

Send your inquiry directly to us (0 / 3000)