JZX812C spread spectrum module is a module developed for wireless automatic meter reading and billing system of gas meters. It is embedded and installed inside the gas meter to record and upload gas meter data. The module is embedded with the national standard 645-97 gas meter protocol and also has the function of pulse gas meter reading. Users can set the corresponding working protocol mode for the module using the matching upper computer setting software according to the type of metering protocol.
The JZX812C meter reading module adopts the "LORA" high-performance ultra-low power RF chip and high-speed microcontroller, with small size, high reliability, and low failure rate. Using the ISM frequency band, users do not need to pay extra to apply for frequency points. Integrating 433MHz and 490MHz frequency bands, it has strong anti-interference ability and provides 16 available channels. The first 8 channels belong to 433MHz, and the last 8 channels belong to 490MHz. Users can set channels according to their needs.


Functional features:
*Half duplex, bidirectional wireless communication function;
*The same table module can switch between photoelectric acquisition and pulse acquisition by simply setting its working mode;
*Effective communication distance ≥ 700 meters (open distance, air speed of 1200; switchable speed, lower speed results in longer communication distance);
*Automatic sleep mode upon completion of meter reading;
*Air wake-up and sleep function;
*Detect battery voltage, low voltage alarm and valve closing function;
*Low power pulse metering function;
*Remote valve control function (passive reporting mode);
*Real time access function for table data (passive reporting mode);
*Pulse meter power failure automatic valve closing function (active reporting mode);
*Pulse data quantitative upload function (active reporting mode);
*Double dry yellow tube magnetic interference automatic valve closing function;
*Battery replacement completed, automatic valve opening function when powered on (pulse meter active reporting mode);
*Wireless communication signal strength (field strength value) detection function (this function is beneficial for the location and installation of on-site collectors).

Technical specifications of JZX812 spread spectrum wireless data transmission module