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Poseidon 1250: Monitoring over IP in industrial applications

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Monitoring over IP for industrial applications. 44 probes, RS-485, 1000 m, Web interface, E-mail, SNMP, SMS (with a GSM modem).

Note: Poseidon model 1250 was replaced by model Poseidon 2250.

Sensors can be connected to the Poseidon model 1250 unit via two busses or you connect directly senor's contacts. The device measures values of connected sensors, the user can access the data over specialized protocols or web browser.

Poseidon can be integrated into NMS (Network Monitoring System), or used with the PD trigger software which simply alerts of a critical situation by sending an SMS message. As an alarm response, this software can close a relay (via network) that controls e.g. light signaling or alarm horn.

  • Industrial bus (RS485): up to 31 sensors, up to 1 000m
  • 3 Digital inputs: connect relay dry contact directly
  • IT bus (1-Wire): up to 10 low cost probes, RJ11 wiring
  • Sensor value out of range: sending Email or SNMP Trap to several recipients.
  • SMS can be sent as alarming via GSM modem connected to RS-232

Poseidon 1250
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Poseidon 1250 Flyer

>> Try the product online



  • IT – server rooms monitoring, 19“ Racks, UPS
  • Air-condition devices monitoring , especially leaking of evaporated water
  • UPS device rooms monitoring, Diesel engines
  • Intelligent buildings environment monitoring
  • Storage buildings monitoring
  • Information points, terminals, transmitters


>> Poseidon - application examples

>> Application study of Poseidon family

What Poseidon measures

sensors (probes) - temperature, humidity, voltage AD,DC, flood, airflow.The Poseidon model 1250 supports up to 42 sensors (probes) for temperature, humidity, air-flow and other value monitoring. Each sensor monitors safe range. It can notify of value out of safe range (Alarm status) via Email or SNMP trap sending.

  • Temperature (up to 42 sensors up to 1000 meters, -55 °C to +640 °C)
  • Humidity (up to 25 sensors up to 1000 meters)
  • Binary input / contact (up to 3 smoke detectors, shake, movement, flooding, angle, close/open door, air-flow etc.)
  • General input (0 to 10V, 4 to 20mA – using external converters to RS-485)

>> Value sensors


Basic Features of the Poseidon 1250

  • Up to 42 sensors and probes can be connected to one Poseidon model 1250 unit
  • Notification about an Alarm status via Email (SMTP), SNMP Trap or SMS (GSM modem over RS-232)
    • PD trigger program (free) can redirect SNMP Trap alarms from unlimitted Poseidon units to SMS (GSM modem connected to PC)
  • Easy configuration in graphic interface (WWW web browser) – screenshot
  • Open communication protocols (SNMP, XML, Modbus/TCP a others)
  • Poseidon 1250 directly controls two outputs
  • Large assortment of sensors, from inexpensive for home use to industrial ones with accuracy 0,15 °C and range from -55 to +640 °C. (see Sensors values). The sensors can be connected over a distance of 1000 meters
  • Safety protected with a password, IP address range, HW security
  • OEM =  Original Equipment ManufacturerFor OEM partners option to change device name, design of web pages for orders of 50 pcs and more.
  • FirmWare update over WWW or over RS-232


>> Poseidon model XXXX - models overview


Download and links



SNMP Traps Big image Temp485


  • WEB (HTML)
    Values and state of sensors are presented on WWW page. The page is automatically reloaded every 5 second. There is a link to Flash Setup from main HTML page, update FirmWare and others.
  • XML
    All sensor's values as well as alarm status information are available in XML files (values.xml) and any application can log it from XML tags - more information
  • SNMP
    SNMP is protocol for monitoring of telecommunication devices, network infrastructure and related technology. The Poseidon is fully controllable over SNMP (v1, partially v2) - more information
  • Modbus/TCP
    Modbus/TCP is industrial standard for input from sensors and output to visualizing and SCADA systems. All values are available over Modbus/TCP - more information

  • Alarms
    • SNMP Traps
      In case of contact switch or exceeding of "Safe Range", the sensor get to the Alarm status. To notify of this a SNMP Trap including alarm status description is sent to configured IP address - more information
    • Email
      In case of contact switch or exceeding of "Safe Range", the sensor get to the Alarm status. To notify of this a Email including alarm status description is sent to configured email address - more information

>> Poseidon – communication protocols .

HW interface - sensor connecting

Overview of all sensors in our assortment: Sensors and accessories.

  • Binary Input (Dry Contact inputs)
    3x input to connect door contact or relay output (NO or NC)
  • IT Bus (RJ12 1-Wire)
    Inexpensive interface to connect up to 10 temperature probes over a total distance of 10 meters or less
  • Industrial bus (RS-485)
    Industrial interface, up to 31 sensors up to 1 000 meters. The temperature, humidity and other sensors. The converters to current loop (4 to 20 mA) or platinum temperature sensors Pt100, Pt500, Pt1000 (2,3 or 4 conductor).

>> Interface for connecting sensors to the Poseidon units


HW interface - relay output

  • 2x outputs
    The Poseidon 1250 supports two outputs for two external relay controlling. The outputs can be controlled over network (Flash Setup, XML, SNMP).
    • Output – Alarm status link: DTR output can be used for alarm signalization of any sensor. Warn light or horn can separately, independently on other software, signal critical status.

We recommend to use: PowerEggP1250 RC (Relay Cable), DIN relay

>> Interface for connecting sensors to the Poseidon units


Technical specifications of the Poseidon 1250

  • Ethernet: RJ 45 - 10BASE-T / 10 Mbit/s
  • Port 1: Industrial bus (RS-485 / RJ45)
  • Port 2: IT bus (1-Wire / RJ12)
  • Port 3: RS-232 (connector Cannon 9 Male)
  • 3 Dry contact input: terminal board for contact (0 to 500W)  
  • Device setting:
    • Locally - RS-232 Setup
    • UDP Config
    • Over HTTP - graphic interface Flash
    • Over SNMP  

Detailed technical specification you can find in manual "Poseidon_1250_MAN_en.pdf" or on the page Poseidon 1250 - technical specification.

>> Poseidon 1250 - detailed technical specification



Which software to use

    HWg-PDMS: rack mount temperature monitoring system
  • Configuration: UDP Config  - IP address configuration
  • Event processing: PD Trigger - reacts to events
  • Monitoring and logging: HWg-PDMS - Monitoring software with MS Excel reporting
  • Visualization: CapTemp - Process monitoring and control
  • Other applications: Third-party SNMP software
  • For programmers: HWg-SDK contains interface descriptions and examples of using M2M protocols in several programming languages
    (JAVA, PHP, Borland C++ Builder 6.0, Microsoft Visual C++ 6.0, Borland Delphi 6.0, Microsoft Visual Basic & Excel VBA, VB.NET, C code for Linux, JavaScript (AJAX) Microsoft Visual C# 2005 (.NET))


PD Trigger application example

With the PD Trigger application for Windows, it is possible to receive alarms (SNMP traps) from an unlimited number of Poseidon products and define conditions and actions based on the originating device and the probe name. For example:
  • In case of air conditioning failure in server room A, send a SMS to Peter
  • In case of alarm in server room B, send e-mail to Tom
  • In case of electricity supply failure anywhere, send SMS to Peter and turn on a warning light at the receptionist's desk

Poseidon 4002: rack mount environment monitoring, e-mail alerting, sms alerts

>> Software for the Poseidon family


Sample odering

Ask for the price or details:
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Spam protection. How many is SIX times six?

  • How long it takes to supply ordered samples?
    We keep the Poseidon units permanently on stock and supply them during 24 to 48 hours.
  • What guarantee you offer?
    Standard is 2 years, it can be extended after agreement.

  • Where do I get prices?
    From our distributors, or by request the price from HW group (Email or Form).
  • Can I get the Tset and THset start sets for extra price?
    The start sets are budget-priced and intended only for new customers who want to test it or supervise via their own program. At the most 3 samples of every type can be ordered.
  • How to find out price of the Poseidon, sensors and accessories for my project?
    Email us (see Contacts) or use Demand Form. Fill in number of sensors, individual distance and what values exactly you intend to measure. Do not forget to mention what SW you will use for data processing or what you expect from the program. Tell use where you are from, we may recommend you installation company in your surroundings
  • Can I pay by a payment card?
    Yes but not online. Fill in the online order form, print it out. Write your payment card detail, sign it and fax it to our fax number. The other possibility is to pay via bank transfer.
  • How do you supply the order?
    We use several transport companies and FedEx for express shipments.

>> How to order a product

>> Fill in the online order form


Order number

OID Type description
600 006
Poseidon model 1250
600 042
Poseidon 1250 Tset (photo)
Recommended start set Poseidon model 1250, power adapter and one temperature sensor
600 043
Poseidon 1250 THset (photo)
Extended start set Poseidon model 1250, power adapter and one temperature/ humidity sensor
600 336 Poseidon x2 serial splitter
Serial port splitter cable to connect Poseidon RC Cable (2 relay outputs) and GSM modem to one Poseidon 1250 or 2250.
3 Cannon DB9: Cannon DB9F (Poseidon), DB9M for GSM modem, DB9M for P1250 RC (can be connected to PowerEgg).
600 244 P1250 RC (Relay Cable) (photo)
Converter for connecting of two relays to 12V Poseidon 1250 over RS-232
600 237 PowerEgg - (photo)
Detection of external AC voltage (110 to 230V), configurable AC output(110 to 230V)
600 312 GSM Modemcom G10 (photo)

>> Poseidon Pricelist

Poseidon model 1250 accessories


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