Chengdu Zongheng Intelligence Control Technology Co., Ltd.
Internet of Things Devices and Solutions Provider
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Remote Terminal Unit IOT Cellular Modem With DI DO AI Ports For PLC Connection
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
Antenna: GPS antenna (ZHC4931G supports GPS), MAIN (LTE network antenna).
SIM: Press the yellow dot on the side of the SIM card slot, pop out the card tray, and insert the SIM card.
DC5~30V (terminals): DC5~30V input.
RESET: restore factory button
DC5~30V (DC power socket): DC5~30V input.
WORK: Equipment operating status indicator
NET: Network status indicator/network data receiving indicator
DATA: Data transmission indicator
POW: Power indicator
485: RS485 interface.
232: RS232 interface (Choose)
DO: NC is normally closed, COM is common
DI: DI1~2 are 2-channel dry (wet) node detection, sharing one COM terminal.
AI: AI is 1 analog signal input
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| ZHC4931 |
| RS485 Modbus | √ |
| RS485 Automatic Acquisition | √ |
| Virtual Serial Port | √ |
| Connfiguration Software | √ |
| Threshold Report | √ |
| Configuration Software Docking | √ |
| Modbus RTU/TCP | √ |