Product Name: Car Mdvr 3G 4G WiFi GPS 4CH 720p 1080P Mdvr with Acc off Delay Recording off Function Model NO.: M598 Warranty: 1 Year Certification: RoHS, ISO2000, FCC Use: Automotive Certificate: Ce FCC RoHS Platform: Web based Platform and APP Operating System: Linux Control Mode: Network, Phone APP Real-Time Video: Support 2g/3G/4G: Yes WiFi: 802.11b/G/N/(Optiona) SD Card: Double SD Card (Maximum of Single Card Is 128) Trademark: neutral Transport Package: Color Box Size: 12X10X5.6cm Weight: 0.4kg 20PCS/ Specification: size: 40mm*30mm*12.5mm Origin: Shenzhen, China HS Code: 8526911000 Product Description Car MDVR 3G 4G WIFI GPS 4CH 720P 1080P MDVR with ACC off delay recording off function1.Functions1)GPS locating in real time;2)Track by 4G network;3)Low power alarm;4)Over speed alarm;5)Geo-fence alarm;6)Parking alarm;7)Tired driving alarm8)History playback;9)Mileage statistics;11)Reports statistics;12) Support 4 channels of 720P HD video real-time storage and upload;13) Support 1 channel CVBS video output, external AV display for real-time video live broadcast;14) Support remote intercom;15) Support 2PCS of SD card (128GB maximum) cyclic storage at the same time;16) Multiple expansion interface, support to connect to fuel sensor, advertising screen, broadcast station, etc.;17) It can support built-in or external WIFI module, connect to senior assistant (APP) through WIFI, flexibly configure device parameters, video real-time viewing and retrieval, camera angle adjustment.2.SpecificationsTechnical ItemTechnicalSpecificationsOperating SystemOperating SystemLinuxControl ModeNetwork, Phone AppVideoStandard DefinitionInput4-channelD1AHD720P4-channel720PAHD1080P2-channel1080PIPC1 channelOutput1-channel CVBSVideo SignalPALAudioInputMaximum 5-channel audioOutput1-channel audioDisplayScreen display1 /2 /4 /6 /8 screen displayVideo RecordingVideo and audio compression formatVideo H.264, Audio ADPCM, g726, g711(default g726)Image ResolutionCIF,HD1,D1,720PVideo modePower on/manual/timing/plan/alarm recording eventsReal-time VideoSupportACC off, time-lapse videoDelay Parameter Range: 10-65535s, Default: 300sMirror videoSupportAlarm VideoSupportBackup videoSupportPlaybackPlayback ChannelSupport local multi-channel synchronous playback, PC software remote single-channel playbackBrowse ModeTime,ChannelNetwork2G/3G/4G4G TD-LTE/4G FDD-LTE/3G TD-SCDMA/3G WCDMA/3G CDMA2000/2G(GSM)WIFI802.11b/g/n/(Optional)StorageSD CardDouble SD Card(Maximum Of Single Card Is 128G)Note: Maximum support 4-channel720P HD camerasInterface CharacteristicsInterface DescriptionInterfaceUSB interfaceUSB mouse, USB WiFiSIM CardSingle card (for GPS data upload and video data transmission)SD CardDual SD card (single card supports up to 128G)SPK/TTSIntercom call, TTS voice broadcastAV video signalCVBS video signal output, connected to AV screenVGA OUTNot supportedIPC/LANIPC extension, connect to webcamTransparent TransmissionPortconnect to fuel sensor, advertising screen, broadcast station, etc.Other CharacteristicsWorking VoltageDC9-36VWorking Current300mA@12V;110mA@24V (No load)Backup Battery3.7V 500mAh Lithium Iron Phosphate BatteryWorking Temperature-25ºC - +80ºCStorage Temperature-40ºC - +85ºC