Mobile intercom module Mobile intercom solution Lixin Technology International Co., Ltd. July 2009 Advantages of intercom Convenience: Within an organization, as long as the intercom frequency is consistent, any intercom can receive the call. It can realize intercom between one person and multiple people, which is very convenient for travel, hiking, etc. Economic: There is no call fee for using intercom; for people who make frequent internal calls, it can reduce costs and save expenses. Freedom: Intercom does not require network support, and you can talk freely by pressing a button. It plays a great role in intercom or engineering operations in suburban areas, deserted islands, earthquakes and other emergencies. Rapidity: Information dissemination is convenient and fast, which is convenient for internal command and dispatch of the organization and close contact. Advantages of mobile phone and intercom integration Free calls and text messages (within the public network) Group business trips and travel save phone charges for cluster dispatch (such as ZTE mobile phones) Public network (UHF free) and private network (GSM) complementary resource sharing (battery, speaker, LCD, keyboard, microphone) Public network and private network are integrated, new fashion and new selling point. Applications of mobile intercom Cluster dispatch: such as ZTE\'s Gota system, which is widely used in large group users such as docks, hotels, construction sites, airports, etc., and also has additional functions such as data transmission Groups with high mobility of personnel: such as communication between train crews, mobile intercom integration can save roaming costs Remote mountainous areas and areas with unstable signals: rural areas, mountainous areas and urban-rural fringe areas, can be used as couples\' mobile phones for hiking, tourism, etc. in home appliance going to the countryside projects Lixin intercom solution A1840 module advantages 1. It can be used for both voice intercom and data transmission 2. Wide working frequency band range (400~470MHZ), which can be arbitrarily written 3. Long transmission distance (3~5 kilometers) 4. High receiving sensitivity (-122db) 5. Small package size (18.9*35.6MM) 6. Ultra-low power sleep mode 7. Direct battery power supply 8. Directly controlled by asynchronous serial port AT command 9. No need to add external circuits 10. Can be used as a simple intercom as a mobile phone companion * For detailed specifications, please see the specification sheet below A1840 specification sheet 1. Overview: A1840 is a highly cost-effective wireless voice/data transmission module with built-in high-performance RF transceiver chip, microcontroller and RF power amplifier (PA). ……
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