Relay Control IOT Cellular Modem With 4DI 4DO 4AI Ports For Iot
Automation
- Introduction of IOT Cellular Modem
ZHC4921 is an industrial-grade 4G RTU that provides 4 DI, 4 DO, 4
AI and 1 RS485 interface, supports local logic processing
operations, automatic acquisition and active reporting, Modbus
RTU/TCP adaptation, automatic calibration threshold reporting, dry
and wet node IO detection, and support one-to-one, many-to-one
network connection.
Parameters of IOT Cellular Modem
| |
Number of ports | RS485*1 | Number of interfaces | 4 Relay output |
Standard | RS485: A, B | Standard | DO*1, COM*2 |
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 | 4 Relay input |
Voltage | 9~36V | Standard | DI*4, COM*2 |
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 | 4 Analog input |
Surge | IEC61000-4-2, Level 3 | Standard | AI*4, COM*2 |
Group pulse | IEC61000-4-2, Level 3 | Scope of test | 4~20mA |
- Solution of IOT Cellular Modem
Water and Rain Monitoring and Early Warning System
Data perception: Detect digital information such as water level,
rainfall, temperature, humidity, wind speed, wind direction, video
images or pictures on site through various sensors;
Data collection: ZHC4921 collects sensor output signals in real
time
Data transmission: ZHC4921 is transmitted to the monitoring center
via 4G
Data application: The management personnel of the monitoring center
can view various online monitoring data and other information in
real time, understand the situation in time, analyze the data, and
issue early warning information.
| ZHC4921 |
RS485 Modbus | √ |
RS485 Automatic Acquisition | √ |
Virtual Serial Port | √ |
Connfiguration Software | √ |
Threshold Report | √ |
| Configuration Software Docking | √ |
Modbus RTU/TCP | √ |
