About KB3031-NF embedded GPRS DTU (data Terminal Unit) is the use of high reliability ARM7 processor and GPRS / SMS transparent wireless data transmission module for the center of the multi-point, multi-point transmission scattered small amount of data. Based on the public network to communicate with a wide range of data transmission, transmission is stable, and reliable, KB3031-NF embedded GPRS DTU in the field of unmanned, remote equipment monitoring, remote data acquisition, remote meter reading and remote scheduling has been widely applications. This product is designed for industrial integration design, in terms of the temperature range, anti-vibration, electromagnetic compatibility and interface diversity are uniquely designed to ensure the stability of the product to work in harsh environments, data communications equipment provided quality assurance. GPRS mobile data network channel can provide TCP / IP connection, can be used for INTERNET connection, data transmission applications. The KB3031-NF GPRS DTU (data Terminal Unit) data terminal unit, is designed for serial data transmission via GPRS mobile data network GPRS wireless devices. For different user requirements of different industries, we can combine the characteristics of the hardware industry, software development and systems integration, to provide different customized terminals. This product is for power system automation, industrial monitoring applications, traffic management, meteorology, environmental protection, network monitoring, financial, securities and other industry sectors, taking into account the needs of the various aspects of network application sectors, support for virtual private network data on the network structure (VPN). 1.2 Features standard industrial grade product, EMC anti-jamming design, ability to adapt to the environment; independent research and development, embedded real-time operating system with 32 ARM7- CPU; embedded chip Watchdog, offers a variety of reset mechanism to software control, to achieve the perfect industrial security mechanism; the operating frequency using the 850/900/1800 / 1900MHz, quad-band applicable to all countries (including South America); advanced and strict data communication protocol, comes with error correction and encryption. Data loss never can be transmitted over 100K pictures and Flash animation files, never appear mosaic; powerful, supports three operating modes: DTU (default), SMS MODEM and MODEM, for GPRS DTU mode when data transmission mode, the user device serial data (RS232 / RS485 or TTL) is sent to the server in the Internet, in the DTU mode can also receive SMS text messages (sent via SMS text messages need to switch to the IO port); SMS Modem work When the mode SMS transmission terminal mode, the user can set the type A (with the agreement) and type B (transparent) for SMS transmission; when Modem mode, compatible with standard AT commands (GSM07.05 and 07.07), users can write their own AT command set of software to complete the required function; switching DTU and SMS MODEM mode can be configured by the user to configure the software, but in the course of user devices operating mode can be flexibly configured by the IO port; configure Modem mode Power must be sent when the user configuration instructions to configure; SMS Modem mode features: support for networking multiple ways: By SMS MODEM mode, A-type and B-type network can, A-type and A-type network can also be carried out ; When working in under SMS MODEM mode, the amount of data sent KB3031-NF single package up 1024Bytes (including A, B-type operating mode), the general texting device or mobile phone can only send 140 packets per byte; SMS Under MODEM mode, send and receive data formats supported: hexadecimal (the default), ASCII code and UCS2 code, these three data formats by the user prior to use, through our configuration software to configure; a variety of ways to support automatic network : with serial - network switches networking products KB2000, KB3031-NF also be used with the same type of product KB3031-NF network (no easy to use with Internet GPRS), enables one to one, one to many networking; Plug That function: When KB2000 with the company's own network or KB3031-NF, this time without any software and hardware development, to build large-scale SCADA system; IP automatic registration mechanism can achieve a variety of service models, build a complete VLSI wireless applications; remote hibernate and wake up: You can dial phone numbers using the specified number of DTU and DTU Sleeps wake, user-friendly in that it hibernate when not in use saves DTU traffic charges; remotely modify DTU parameters: support SMS modify DTU parameters, and network modifications DTU parameters; IO switch function: a two-way switch inputs, two digital outputs. You can control the switch input or check the status of the digital inputs via gprs network or text message. You can remotely turn on the alarm and set the input alarm mode: GPRS alarm and SMS alarm, and can set the alarm status threshold (low or high alarm alarm), in addition the user can customize the alarm information content; powerful communication backup Function: If turned on alternate services, connected to the main server and backup server can automatically switch once the primary server problems, automatically connect to the backup server; powerful server software support, server software applications for many years, powerful, sophisticated; Supports fixed IP and dynamic DNS support dedicated APN; supports up to four server synchronization feature, if open GPRS server synchronization, KB3031-NF registered four servers simultaneously, and communicate; supports up to 20 SMS control number; Industrial Temperature Range: Operating temperature: -40 ℃ -80 ℃, at -40 ℃ communications unaffected. 1.3 Safe Use KB3031-NF GPRS DTU in full compliance with technical regulations on radio products, but please note: Do not hand or other body part touching the antenna, in the beginning turned 15 seconds as far away from the antenna, antenna if damaged should timely replacement, using the supplied cable and antenna qualified. 1.4 Electromagnetic Interference Currently, most electronic devices have taken the electromagnetic protective measures, but there are also older devices may not have to take appropriate protective measures, faults may occur at RF energy radiation, the use of KB3031-NF GPRS DTU should check close Are ready device within range of electromagnetic protection. 1.5 Dimensions Volume: LWH 54 * 36 * 6.8mm pin pin sizes: standard 2.0m spacing