Top products

HWg-STE / HWg-STE plus
Ethernet Web thermometer/hygrometer
HWg-Ares 12
GSM thermometer, Email (GPRS) & SMS
Poseidon xxxx
Sensors + I/O over Ethernet (Web, SNMP)
Damocles xxxx
I/O over Ethernet (SNMP, Modbus/TCP)
Serial port I/O over IP RS-232/485 + I/O over Ethernet icon
Water leak detector (WEB, SNMP, relay)
HWg-PWR 3/12/25
M-Bus to Ethernet smart gateway

On-line demos

HWg-STE Prague

Poseidon model 2250 Prague

Poseidon model 3268 Prague

Damocles model 2404 Prague

IP WatchDog Lite Prague

>> more online devices

>> subscribe

What's new

15. 4.2014
New Case Study about IP sensors & IP Cameras integration
HWg-CS41 describes HSYCO HWg Remote control and monitoring + IP cameras in one system. Simple to use solution combines IP sensors from HW group and IP cameras to one system.
You can control your smart house from anywhere on your iPad, iPhone, Nokia or any other smart phone / tablet device.

27. 3.2014
HWg-STE plus PoE (Power over Ethernet)
HWg-STE plus PoE is an Ethernet thermometer / hygrometer with two digital inputs for dry contacts. It’s powered over Ethernet (IEEE 802.3af) or from included external power adaptor. The package includes a temperature probe and a power adapter. Can be connected to the SensDesk online portal..

11. 3.2014
New product for connecting Pt100 and Pt1000 temperature probes
Converter 2xPt100 1W-UNI lets you measure temperature from two external Pt100 or Pt1000 probes.
Double converter has a 1-Wire UNI (RJ11) output. You can connect it with LAN (Poseidon2) or GSM (Ares) monitoring devices.
Typical applications include measuring extreme temperatures in furnaces, coolers, engines, etc.

13. 2.2014
Poseidon2 4002: Data center environment monitoring
Poseidon2 4002 is a system for remote monitoring of rack environmental conditions (occupies 1U). Measures temperature, checks if the lights are on or the doors are open in the server room, and more. Poseidon is SNMP compatible, includes a data logger, e-mail and SMS alerts. It can be connected to the SensDesk online portal or cloud sensor systems.

31. 1.2014
HW group on Smart Automation 2014 (Vienna)

Find out more about our products on May 6-8 2014 in Vienna, Austria at Smart Automation 2014.

BellEquip GmbH
Halle A, Stand 801 (A0801)

older news


Enter your e-mail and we will keep you informed

Spam protection. How many is five times six?

HW group produces IP-enabled sensors

HW group s.r.o. is a manufacturer of sensors with IP interface. We provide solutions for remote monitoring and remote control over M2M. Our products are designed for IT SOHO, datacenters, industrial and security applications. More about us

Applications of our products:

Temperature monitoring over Web, SNMP, e-mail

The HWg-STE IP Thermometer enables remote temperature monitoring over a LAN. If the system overheats or a temperature is exceeded, an e-mail alert is sent. Supplied with the HWg-PDMS software for Windows – charts, export to MS Excel.

  • E-mail alerts to faulty air conditioning
  • Alerts to equipment overheating (server, disk array)
  • Alerts to rising temperature in a room
  • Quick and easy installation (DHCP supported)
  • Connects to SNMP monitoring systems
  • Free HWg-PDMS software for Windows (MS Excel exports)

>> more about HWg-STE  

Temperature monitoring in refrigerators and cooling boxes

A Poseidon 2250 unit monitors storage conditions for food or pharmaceuticals. Up to 30 probes can be connected – temperature, humidity, air pressure, door contacts.

  • Values are logged in the internal memory.
  • Temperature probes use a thin, flat cable that can lead through the door sealing. No need to drill a hole into the refrigerator or worry about batteries.
  • Alerts by e-mail or SMS (text message) if the refrigerator door is not fully closed.
  • Connects to SNMP monitoring systems.
  • Readings can be processed with the supplied HWg-PDMS software (Windows) or with third party software.
  • A GSM modem can be connected in order to alert the responsible person to electricity outages by text messages (SMS).

>> more information  

Poseidon 4002 – Rack Monitoring System

A Poseidon 4002 unit with various sensors and probes (temperature, humidity, door contacts, power supply, water flood) monitors the environment inside a 19" cabinet.

It can report over SNMP to any datacenter or IT monitoring system.

  • Two different people can be alerted by SMS (text message) to an electricity outage or phase loss
  • You immediately know when someone opens the cabinet (SNMP Trap, pop-up window)
  • E-mail alerts you in time to rising temperature
  • You can check the cabinet status remotely over the Web
  • You can remotely restart a server or switch on air conditioning

>> more information  

Water flood detection

Water or any other conductive liquid is detected along the entire length of the WLD sensing cable.
The WLD sensing cable can be extended with a regular cable. This allows for optimizing the costs for a detection zone.

Examples of use:
  • Water detection under raised floors
  • Leaky pipe detection (cable routed along the pipe)
  • Detection of liquids in drip trays
  • Water leak from air conditioning units

Flood detection outputs:


Electricity consumption metering

HWg-PWR collects data from meters over M-Bus (data are logged into the internal memory). Consumption charts can be plotted over the Web, e-mail alerts to overcurrent can be configured.
HWg-PWR can send detailed billing information every month. With a certified M-Bus electricity meter, costs can be directly invoiced, or cos Phi monitored.

M-Bus meters are not limited to electricity meters. M-Bus heat meters, gas meters or water meters can be also connected. HWg-PWR is an intelligent gateway for connecting any M-Bus meter to your LAN.

>> more about HWg-PWR  

Box-2-Box: Relay control over LAN

Two I/O Controller units can be connected against each other over a LAN. Digital inputs are then connected over the network to relay outputs. The delay is approximately 200ms. With a remote LAN relay, it is possible to switch any device on or off.

  • Each unit can connect to the remote unit
  • When the power fails and is restored, the unit automatically retrieves input states from the remote unit
  • Uses a Telnet-like protocol with optional security enhancements

>> I/O Conroller overview  

Target segments of our solutions


IP-enabled sensors