Wireless Digital Input IOT Cellular Modem With IOT Platform Support 2DI 1DO 1AI
- Introduction of IOT Cellular Modem
Product model: ZHC4931, providing 1RS485/1RS232/1DI/1DO/1AI interface.
Features: Threshold reporting, wet and dry node detection, and the device itself supports logical operations.
Protocol: Support Modbusr RTU/TCP adaptive.
Industrial-grade quality: anti-reverse connection, anti-surge, dual watchdogs, can work normally at -20℃~+60℃
The product is suitable for: data security monitoring, remote water pump automatic control, water resources real-time management system
Parameters of IOT Cellular Modem
| |
Number of ports | RS485*1 | Number of interfaces | 1 Relay output |
Standard | RS485: A, B | Standard | DO*1 |
Baud rate | 600~921600bps | Mechanical durability | 10^7 |
Data bit | 8, 9 | Electrical durability | 10^5 |
Stop bit | 0.5, 1, 1.5, 2 | Capacity | 5A 250VAC 30VDC |
Check Bit | NONE EVEN ODD | |
| Number of interfaces | 2 Relay input |
Voltage | 9~36V | Standard | DI*2, COM*1 |
Current | 60mA(aver) @9V 30mA(aver) @36V | Detection range (wet node) | 5~50V->High0~2V->Low |
| |
ESD | IEC61000-4-2, Level 4 | Number of Interfaces | 1 Analog input |
Surge | IEC61000-4-2, Level 3 | Standard | AI*1 |
Group pulse | IEC61000-4-2, Level 3 | Scope of test | 4~20mA |
- Features of IOT Cellular Modem
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- ZHC4931 can communicate directly with the client server after simply configured. The ZHC4931 follows the Modbus RTU/TCP protocol and also supports 485-channel transparent transmission protocols.
- When some customers use the configuration software, they can't directly connect the PC and S485. ZHC4931 supports the ZH-Cloud transmission. The customer only need to install the virtual serial port, the data of the ZHC4931 can be forwarded to the local serial port of the PC, which is more convenient and quick. (Also applicable to scenarios without a cloud server)








| ZHC4931 |
RS485 Modbus | √ |
RS485 Automatic Acquisition | √ |
Virtual Serial Port | √ |
Connfiguration Software | √ |
Threshold Report | √ |
Configuration Software Docking | √ |
Modbus RTU/TCP | √ |