Cellular IoT Modbus RTU (8DIN,6AIN/PT100,4Relay,1TH,USB,RS485,320 mapping registers)
Model no：S275

The Cellular IoT Modbus MQTT RTU supports transparent data transmission and performs as Modbus Master Slave over GPRS/3G/4G network and RS485 serial port. Moreover, the Cellular IoT Modbus RTU can be used as Modbus RTU Master to reading smart meters, I/O modules, PLC, and converts to SMS alert once triggered the threshold value, or transmit data to remote server over GPRS/3G/4G/NB-IOT network. Compatible Modbus TCP and MQTT IoT Protocols,can intergrate to the KPIIOT IoT Cloud Platform or other IoT Cloud Platforms or SCADA or OPC servers.
1. GSM GPRS 3G/4G/ Modules are optional;
2. MQTT/Modbus RTU/Modbus TCP protocol;
3. with 320 mapping registers,can convert modbus rtu to MQTT or modbus TCP;
4. Modular design, can easily upgrade the cellular module if network upgrade;
5. Embedded ARM® Cortex™-M4 32 Bit RISC Core, 168 MHz inside, RTOS system, reliable performance with in-built watchdog;

6. Wide range power supply 9~36VDC with over voltage and phase-reversal protection;

7. 8 digital inputs, compatibles dry and wet contact, DI0-DI3 can be used as pulse counter;

8. 6 analog inputs, 12bit resolution, compatibles 0/4~20mA, 0~5V, can change to PT100 Resistance Temperature Detectors;

9. 4 relay output (5A/30VDC, 5A/250VAC), compatibles pulse outputs;

10. 1 ambient sensor input for monitoring onsite temperature and humidity;

11. Inbuilt inter-lock logic programmer and powerful timer program function;

Parameter Name	Parameter Value
Type	modular GSM GPRS
Port	RS-485
Other characteristics	wireless high-performance compact intelligent battery-operated robust for M2M application