Manufacturer product photo · industrial IoT gateway for environment monitoring

EMS-200

Name: Uniview EMS-200
Brand: Uniview

IoT Gateway · Environment Monitoring Host

Industrial IoT Gateway for Environment Monitoring · 1×RS-232 + 3×RS-485 · 8×DI + 2×DO Relay · Modbus/SNMP

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Overview

The EMS-200 is an industrial IoT gateway for environment monitoring that bridges RS-232/485 serial devices and the TCP/IP Ethernet network, providing 1 × RS-232 and 3 × RS-485 serial ports plus 8 × DI and 2 × DO (relay) I/O interfaces. Built around a high-performance 32-bit processor with an embedded system for stable, reliable, low-power operation, it supports standard Modbus TCP and Modbus RTU/ASCII protocols alongside SNMP MIB-II, Real COM/TTY drivers and Web-console configuration. It is widely used in power monitoring, equipment-room monitoring, PLC, smart meters, gas meters, biometric devices and card readers.

Is This the Right Fit?

Six real deployment scenarios matched to this model's actual datasheet specifications.

Equipment Room Environment Monitoring8×DI plus 2×DO relay outputs, together with 1×RS-232 and 3×RS-485 serial ports on a 19-inch 1U rack-mount chassis, let the EMS-200 aggregate a full equipment room's environmental sensors and switching-value alarms into one Modbus/SNMP-managed IoT gateway.

Legacy Serial Equipment to IP NetworkingWith 1×RS-232 and 3×RS-485 ports covering 110–460800bps, the EMS-200 lets legacy serial instruments and controllers join the TCP/IP Ethernet network — no extra PC required to link two peer serial devices over the network.

Outdoor / Unconditioned Equipment CabinetThe optional wide-temperature build operates from -40 to +75°C (storage -40~85°C), suited to unheated equipment rooms and outdoor cabinets exposed to seasonal extremes.

Switch-Signal Acquisition & Remote Relay Control8×DI plus 2×DO relay outputs, all with photoelectric/electromagnetic isolation protection, let the EMS-200 capture door-access, humidity, water-leak or smoke-sensor switch signals while remotely driving equipment on/off through the relay outputs.

Modbus TCP/RTU/ASCII Protocol BridgingBuilt-in support for standard Modbus TCP and Modbus RTU/ASCII lets the EMS-200 bridge serial PLCs, smart meters and gas meters into a Modbus TCP-based monitoring network, matching the datasheet's listed power-monitoring, equipment-room-monitoring, PLC, smart-meter and gas-meter applications.

SNMP MIB-II Network Management IntegrationSupport for the simple network management protocol SNMP MIB-II, plus a Web console for management and configuration, lets network operators pull the EMS-200 into an existing NMS platform for centralized monitoring alongside other managed network gear.

Not a good fit if:

IP40 metal enclosure only — direct outdoor rain or dust exposure needs a cabinet or additional protection.
Single DC 36–56V power input only — no redundant dual-input option is listed for this series.
Fixed I/O count of 1×RS-232 + 3×RS-485 serial ports and 8×DI + 2×DO relay outputs — not user-expandable, and the datasheet lists no analog I/O (AI/AO) channel count for this model.

Key Features

Industrial IoT gateway bridging RS-232/485 serial devices to the TCP/IP Ethernet network
High-performance 32-bit processor · highly integrated, low-power design for industrial environments
Standard Modbus protocol support: Modbus TCP, Modbus RTU/ASCII
Digital/analog input-output and relay-output business interfaces
Local real-time clock plus Modbus alarm-log storage
Windows Real COM driver and Unix/Linux TTY driver — complete serial data delivered to user applications
Universal Socket modes (TCP Server/Client, UDP) — connect two peer serial devices over the network without adding a computer
10/100M auto-negotiating Ethernet interface, manual mode setting supported
Built-in 15KV ESD protection on all signals
SNMP MIB-II support with Web-console management — easy to operate and maintain

Specifications

LAN

Ethernet	10/100 Mbps, RJ45
Protection	Built-in 1.5KV electromagnetic protection

Serial Interfaces

Quantity	1 × RS-232, 3 × RS-485
Port Type	DB-9, terminal block
RS-232 Signal	TXD, RXD, GND
RS-485 Signal	Data+, Data-, GND
Serial Protection	All signals with 15KV ESD protection
Parity	None, Even, Odd, Mark, Space
Data Bits	5, 6, 7, 8, 9
Stop Bits	1, 1.5, 2
Flow Control	Xon/Xoff
Speed	110 ~ 460800 bps

I/O Interfaces

Quantity	8 × DI, 2 × DO (relay)
Port Protection	All I/O ports with photoelectric/electromagnetic isolation protection

Power Output

DC Power Output

12V/30W DC high-power output

Software Features

Protocol	Modbus, ICMP, IP, TCP, UDP, DHCP, Telnet, SNMP, HTTP
Tool	Windows 2000/XP management software supported
Driver Support	Windows 2000/XP Real COM driver, Unix/Linux TTY driver
Configuration	Web browser, Telnet, Console

Power Input Requirement

24V Power Input	Input range 36–56V DC
Power Consumption	230mA @ 12V

Environment

Standard Temp	-10 ~ +60°C
Wide Temp	-40 ~ +75°C
Storage Temp	-40 ~ +85°C
Humidity	5–95% non-condensing

Physical

Housing	IP40 metal enclosure
Mounting	Standard rack-mount installation
Dimensions	240 (W) × 44 (H) × 110 (D) mm

Warranty

MTBF	320,000 hours
Warranty Period	5 years

Models & Ordering

Model	Product Description	Price
ZJEMS-200-DCH	19-inch 1U rack-mount environment monitoring host — 1×RS-232, 3×RS-485, 8×DI, 2×DO; supports Modbus RTU, Modbus TCP, virtual serial port and TCP Socket working modes; SNMP supported; IP40; DC48V powered.	✆ WhatsApp

This page covers the EMS-200 series full-I/O variant (1×RS-232, 3×RS-485, 8×DI, 2×DO relay outputs). The listed configuration model ZJEMS-200-DCH is a 19-inch 1U rack-mount build with SNMP support, IP40 protection and DC48V power. A reduced-I/O sibling model, EMS-200-150 (2×RS-485, 6×DI, no RS-232, no relay output), is also available in the series. The requested model is EMS-200.

Environment Monitoring Gateway FAQ — EMS-200

Which ports does the EMS-200 provide?

One RS-232 port on DB-9 and three RS-485 ports on terminal blocks, plus 8 digital inputs and 2 relay outputs, all bridged to a 10/100 Mbps Ethernet port. Serial speeds run 110 to 460,800 bps with configurable parity, data bits (5–9) and stop bits (1, 1.5, 2).

What protocols does the EMS-200 support?

Standard Modbus TCP and Modbus RTU/ASCII for SCADA integration, plus SNMP MIB-II, Telnet, HTTP, DHCP, TCP/UDP and ICMP on the network side. Real COM drivers for Windows and TTY drivers for Unix/Linux let existing serial software keep talking to field devices over the Ethernet network.

What is the EMS-200 typically used for?

It is widely used in power monitoring, equipment-room monitoring, PLC connectivity, smart meters, gas meters and biometric devices. The 8 DI channels collect dry-contact states from sensors while the 2 relay DO channels provide output control, and everything reports over one Ethernet link to the monitoring platform.

What power input does it need?

The power input accepts a 36–56 V DC range and the unit draws about 230 mA at 12 V, so consumption stays low for continuous operation. A 12 V / 30 W high-power DC output can feed sensors or small devices next to the gateway, simplifying wiring inside the cabinet.

Can it handle tough electrical and temperature conditions?

All serial signals have 15 kV ESD protection, every I/O port uses photoelectric/electromagnetic isolation, and the Ethernet port carries built-in 1.5 kV electromagnetic protection. Standard temperature range is -10 to +60 °C, wide-temperature -40 to +75 °C. The 240 × 44 × 110 mm IP40 metal chassis rack-mounts, with 320,000 hours MTBF and a 5-year warranty.