4 channels SD MDVR 3G 4G GPS WIFI OEM ODM manufacturer best

Key featuresDouble backup system, more stable and easier to maintain,8 seconds delay for data protection when powered off suddenly; preventing data lost and file destroyed by instant power-offSleeping mode, enables communication after flame-out, continual GPS locating, remote arousal availableExternal storage sync back available, data secured, preposed Sim Card, easy for mount, removal and maintenanceTrail recording available, 8 channels of I/O input and 2 channels of I/O outputSeveral extendable interfaces, including 2 RS232 interfaces, 2 RS485 interfaces and 1 CAN interfaceWiFi network, 802.11b/g/n supportive, Bluetooth supportive, and wireless communication enabledStabilityIndustrial embedding designed, low power consumption and aluminum coated enables maximizing heat dissipationFanless to avoid dust from the outsidePower protective system for on-board electric appliance, power input from 8V to 36VPower supply protection system, enabling the MDVR continues working at transient low voltage of 6V and transient high voltage of 60V8 seconds power-off delay for data protection, preventing data lost and file destroyed by instant power-offAppearanceSand blasting outshines its appearanceModular FeaturesGPS Module extendable, both internal and external extension available3G extendable, WCDMA(HSPA)/CDMA2000(EVDO)/TD-SCDMA supportedWIFI extendable, 802.11b/g/n and Bluetooth (optional) supportedExtendable Features8 IO input available, recording braking, reversing, and turning alarming2 IO output available, enabling telltale lamp, tell-tale signal and remote control1 CAN interface available, recording speed, rotational speed, acceleration, temperature and fuel consumption2 RS232 serial ports, 2 RS485 serial ports available and LED display, attendance machine, on board PTZ and other kinds of sensorsBuild-in amplifier (optional), enabling on-board speaker to broadcast station announcementsPulse sensor interface available, enables reading of speed of vehicleExternal control panel extendableIntercom interface available