Manufacturer product photo · industrial environment monitoring host, DC48V compact version (EMS-200-150)
EMS-200-150
IoT Gateway · Environment Monitoring Host
Compact Industrial IoT Gateway · 2×RS-485 + 6×DI Environment Monitoring Host · DC48V
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◆2×RS-485 + 6×DI
◆1U 19-Inch Rack-Mount
◆Compact 180×44×96.5mm
◆DC48V Input
◆Modbus TCP/RTU + Syslog
◆5-Year Warranty
Overview
The EMS-200-150 is a compact industrial IoT gateway and environment monitoring host that connects RS-485 serial devices and digital-input sensors to a TCP/IP Ethernet network through 2 × RS-485 ports and 6 × DI channels. Compared with the full-featured EMS-200, this version omits the RS-232 port and DO relay outputs, keeping the same 32-bit processor, Modbus TCP/RTU/ASCII, SNMP MIB-II and Syslog support inside a smaller 180×44×96.5mm 1U rack-mount chassis. Powered by DC48V (36–56VDC input, 230mA@12V), its I/O is limited to 6 × DI digital inputs with no relay/DO output, making it suited to status-monitoring points rather than remote switching control.
Is This the Right Fit?
Six real deployment scenarios matched to this model's actual datasheet specifications.
Server / Equipment Room Environment Monitoring6 × DI digital inputs plus 2 × RS-485 ports let a single 1U EMS-200-150 collect door/water/smoke alarm contacts and poll Modbus RTU sensors in the same equipment room, feeding readings to a Modbus TCP monitoring platform over Ethernet.
Unheated / Extreme-Temperature Cabinet SitesAn optional wide-temperature build extends operation from the standard -10~60°C to -40~+75°C, suiting unheated equipment rooms and outdoor cabinets exposed to seasonal extremes.
Pure Status Monitoring Without Control OutputsWith only 6 × DI digital inputs and no DO relay outputs, the EMS-200-150 is built for points that only need state acquisition (open/closed, alarm contacts) rather than remote on/off switching.
Space-Constrained Cabinet InstallationAt 180×44×96.5mm, the EMS-200-150 is noticeably smaller than the full-featured EMS-200 (240×44×110mm), freeing rack depth and width in tight cabinets.
Centralized Log Server IntegrationBuilt-in support for the Syslog standard logging protocol (alongside Modbus/SNMP/HTTP) — a capability this compact model adds beyond the base EMS-200 — lets it forward events directly to an existing centralized syslog server.
Two Independent RS-485 Monitoring LoopsThe 2 × RS-485 ports (terminal block, Data+/Data-) can each address a separate Modbus RTU device chain, letting one host poll two independent groups of serial sensors or meters at speeds from 110 to 460,800bps.
Not a good fit if:
- No RS-232 port — only 2 × RS-485 ports are available, so RS-232-only serial devices cannot be connected directly.
- No DO relay outputs — only 6 × DI digital inputs are provided, so remote switching/control of external circuits is not supported; monitoring only.
- IP40 enclosure only — needs a rack cabinet or additional protection for direct outdoor rain/dust exposure.
Key Features
- 32-bit high-performance processor for stable, reliable operation
- Modbus TCP and Modbus RTU/ASCII protocol support
- Local real-time clock with Modbus alarm-record storage
- Windows Real COM driver plus Unix/Linux TTY driver
- Generic Socket modes — TCP Server/Client and UDP
- Serial-tunneling mode links two peer serial devices over the network without adding a PC
- 10/100M auto-negotiating Ethernet port, manual setting supported
- All serial and I/O signals carry built-in 15KV ESD protection
- SNMP MIB-II support for standard network management
- Syslog standard logging protocol support
- Web / Telnet / Console management for easy configuration and maintenance
Specifications
LAN
| Ethernet | 10/100 Mbps, RJ45 |
| Protection | Built-in 1.5KV electromagnetic protection |
Serial Interfaces
| Quantity | 2 × RS-485 |
| Port Type | Terminal block |
| RS-485 Signal | Data+, Data- |
| Port Protection | All signals 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 ~ 460,800 bps |
I/O Interface
| Quantity | 6 × DI |
| Port Protection | All I/O ports photoelectric/electromagnetic isolation protection |
Power Output
| DC Power Output | 12V/30W high-power DC output |
Software Features
| Protocol | Modbus, ICMP, IP, TCP, UDP, DHCP, Telnet, SNMP, HTTP, Syslog |
| Tool | Windows 2000/XP management software supported |
| Driver Support | Windows 2000/XP Real COM driver, Unix/Linux TTY driver |
| Configuration | Web browser, Telnet, Console |
Input Power Requirement
| 48V 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 |
| Dimensions | 180 (W) × 44 (H) × 96.5 (D) mm |
Warranty & Reliability
| MTBF | 320,000 hours |
| Warranty | 5 years |
Models & Ordering
| Model | Product Description | Price |
|---|---|---|
| ZJEMS-200-150-DCH | 19-inch 1U rack-mount environment monitoring host — 2×RS-485, 6×DI, supports Modbus RTU, Modbus TCP, virtual serial port and TCP Socket modes; SNMP supported, IP40, DC48V powered. |
This page covers the model requested as EMS-200-150. The datasheet order code is ZJEMS-200-150-DCH (chassis silkscreen: ZJEMS-150), denoting the DC48V-powered 2×RS-485 + 6×DI environment monitoring host. No other port or power variant is listed in this datasheet.
Dimensions
unit: mm
Your Brand. Our Factory.Neutral casing, ready for your logo · Custom port/power options · Small batches welcome.
Custom & OEM →Industrial IoT Gateway FAQ — EMS-200-150
What devices can I connect to the EMS-200-150?
Two RS-485 serial ports on terminal blocks (110 to 460,800 bps) and six digital-input channels, all bridged to a 10/100 Mbps Ethernet port. Typical loads are meters, sensors and other Modbus RTU/ASCII field devices that need to reach a Modbus TCP master or monitoring platform.
How is the EMS-200-150 different from the EMS-200?
This version omits the RS-232 port and the DO relay outputs: you get 2 × RS-485 and 6 × DI only, in a smaller 180 × 44 × 96.5 mm 1U chassis. The 32-bit processor, Modbus TCP/RTU/ASCII, SNMP and Syslog support stay the same — pick it when relay output control is not required.
How is it powered on site?
It takes 48 V DC nominal with a wide 36–56 V DC input range and draws about 230 mA at 12 V. A 12 V / 30 W high-power DC output is also available to feed sensors or small field devices, saving a separate power supply in compact monitoring cabinets.
Is it protected enough for harsh equipment rooms?
Serial signals carry 15 kV ESD protection, all I/O ports use photoelectric and electromagnetic isolation, and the Ethernet port has built-in 1.5 kV electromagnetic protection. Standard units run -10 to +60 °C and the wide-temperature range covers -40 to +75 °C, in an IP40 metal enclosure rated 320,000 hours MTBF.
How do I configure and integrate it with my software?
Configure via web browser, Telnet or console, with Windows management software plus Real COM (Windows) and TTY (Unix/Linux) drivers for legacy serial applications. Protocol support covers Modbus, TCP/UDP, DHCP, Telnet, SNMP, HTTP and Syslog, fitting both SCADA polling and IT-style monitoring. Warranty is 5 years.
