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  • AN25: Replace a serial printer with the PortStore - network serial buffer

    A serial printer is still nowadays used to monitor reports from various devices like is a central alarm unit or fire alarm. Sometime it can be useful to monitor printed data over Ethernet network or simply replace the serial printer with any unit and collect data over the network. Application Note...
  • AN26: PortBox and Epson lx-300+

    Epson LX300 is a typical dot matrix printer with single sheet/fanfold paper feeder. It can be connected to LPT or RS-232. This article describes how to connect this printer to a serial port and make it accessible via ethernet network using the RS-232 - Ethernet converter PortBox.
  • AN36: IP Thermostat with a Web interface

    Poseidon can be used for monitoring over an IP network, or as a thermostat or hygrostat. Application Note 36 describes the available local / remote thermostat function options and the Poseidon unit setup.
  • 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.
  • 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...
  • HWg-CS11: E-mail alert to high temperature (overheating)

    IP thermometer enables web-based, remote temperature monitoring over IP networks. System overheating or excessive temperature alerts are sent by e-mail. Supplied with software for downloading data over IP, displaying graphs and exporting data to MS Excel. (Excel thermometer)
  • HWg-CS12: SMS & Email temperature alert

    Temperature is monitored with a GSM/GPRS thermometer. SMS (text message) alert can be delivered to 5 recipients. The Ares12 unit is also capable of sending alerts as standard E-mail through its GPRS data connection. Temperature alert can be sent whenever the temperature is too high or too low.
  • HWg-CS23: Cabinet door monitoring over IP

    Example of a remote door, temperature and humidity monitoring solution. Whenever a door opens, a notification is sent by e-mail or SNMP. Supplied door contacts fit any door, or even the side boards of a 19" rack.
  • HWg-CS32: 19” cabinet monitoring over GSM and LAN

    Independent rack monitoring over IP and GSM. Open door, high temperature or electricity outage is signaled by SMS to several phone numbers. E-mail and SNMP trap are also sent. It is possible to connect a horn (local alarm) or a fan (local cooling). The solution is designed for 19” cabinets.
  • HWg-CS33: S0 pulse counter with SNMP & Modbus/TCP

    Case study on connecting electricity, gas or water meters to the Ethernet and reading values over the SNMP or Modbus/TCP protocols. Pulse outputs from 3rd party meters (S0 interface) are connected to the Damocles Ethernet I/O unit. Each Digital Input on the Damocles unit features a 32-bit pulse...
  • HWg-CS41: Remote control & IP sensor monitoring + IP cameras in one system (HSYCO)

    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.
  • HWg-CS51: Controlling a 110/230V power switch over Ethernet

    The remote power switch is connected to a LAN (IP) and controlled from any application. Open a gate or switch on a light (230V/16A relay output) by clicking an icon on your desktop. The relay output can be controlled from Windows or Linux, from the command line or from a GUI.
  • HWg-CS53: GSM temperature monitoring and logging, e-mail alerts over GPRS

    Portable solution for remote temperature monitoring and logging, suitable for monitoring rooms or equipment. Excessive temperature sensed by a probe is signaled by a SMS or a ring. GSM thermometer Ares12 continuously logs the temperature in its internal memory and periodically e-mails the log over...
  • HWg-CS55: Thermostat and hygrostat with web interface (230V relays)

    For IT applications in cabinets or outdoor locations, maintaining the stable temperature and humidity range is critical. Poseidon 3468 is used as an independent thermostat and hygrostat, with remote monitoring and control over TCP/IP.
  • HWg-CS56: Connecting Saia Burgess M-Bus meters to a LAN (SNMP, Modbus/TCP)

    This Case study shows how to connect Saia Burgess M-Bus electricity meters to the Ethernet. You can read values remotely using SNMP or Modbus/TCP protocols. Web interface, email reporting and alarming is available. Tested with Saia Burgess ALD1D5FM one phase meter and ALE3D5FM three phase meter...
  • 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.
  • Temperature monitoring in coolers and fridges

    A Poseidon 2250 unit monitors storage conditions for food or pharmaceuticals. Up to 30 probes can be connected – temperature, humidity, air pressure, door contacts.
  • Temperature monitoring over SNMP and 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.
  • 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.
  • AN20: UDP Config in your applications

    Most of the HW group devices allow you to set the IP address using UDP broadcast. It is implemented in the Hercules utility, for example. The AN20 is intended for companies that want to implement the device search in their applications.
  • AN21: Controlling of IP Relay using program NetCat

    Besides the RS-232 serial port, the IP Relay device contains also another two relays whose switching on/off can be controlled over Ethernet (TCP/IP). Application Note 21 describes how to control relays from the Windows command line sending right sequence using program NetCat.
  • AN22 - How to send an e-mail from the PortStore buffer device

    The PortStore buffer device has the facility to send e-mail alert when power failure occurs or the buffer is getting full. These functions are useful when you use PortStore as CDR/SMDR buffer for PBX in remote location. To use this function, it is necessary to have installed a SMTP server on the...
  • AN23: Serial Tx Pause for Eth/RS-232 converter

    This application note describes how to pause the remote transmition of data on Ethernet/RS-232/485 converters. This functionality is necessarry if you need to send the output data over RS-232 in precisely defined packets. This way you can ensure the precise timing on the serial port output.
  • AN27: I/O Controller - connecting relay to 230V AC

    I/O Controller can read states of digital inputs and control 8 outputs over network. Inputs and outputs are designed for low voltage up to 50V. This application note describes how to connect relay to I/O Controller. You can control 230V AC (110) device over external relay or detect voltage over...
  • AN28: Damocles family & Modbus/TCP

    Application examples show how to use the Modbus/TCP network protocol for communication with Damocles family products (models MINI and 2404). Use „Modbus Poll version 3.2“ program to test communication – Windows PC client over Modbus/TCP that is for free in limited version.
  • AN29: PosDamIO - use command line to control outputs

    Poseidon Damocles I/O is a line utility for Windows and UNIX. It enables to control Poseidon and Damocles units over XML interface, show list of sensor's states, inputs, outputs as well as to setup output to log. 1 or 0. The PosDamoIO utility is designed for line scripts and applications that need...
  • AN30: Poseidon & Damocles Installation Wizard

    Installation Wizard simplifies the use of Poseidon and Damocles products in your applications. Simply call the wizard from within your application to add, remove or configure a Poseidon or Damocles unit.
  • AN32: M1 - SMS notification from a NMS

    The M1 a.k.a. Monitor one is a monitoring software for Windows that works with SNMP-enabled devices. Besides notifying about alarm status by e-mail and by closing a contact (see AN33), the software also allows to send a text message (SMS) containing a specified text. The SMS is sent via a GSM modem...
  • AN33: M1 – Closing a remote relay contact upon NMS alarm

    Poseidon, in conjunction with the M1 a.k.a. Monitor one software, can be used to close a relay contact if a preset value (temperature, humidity, etc.) is exceeded. This AN describes one of the possible methods.
  • AN34: Examples of using Poseidon Industrial Bus

    The AN34 application example details the use of the Industrial Bus (RS-485) for connecting sensors to a Poseidon 1250 or 2251 unit. It describes in detail the wiring of cables and connectors, as well as the DIP switch settings for supplied accessories.
  • AN35: Poseidon – hysteresis - Preventing false alarms

    Poseidon monitoring unit sends SMS, e-mail, and SNMP traps whenever a sensor value is outside of a safe range. However, when the temperature or humidity fluctuates, the unit can send tens or hundreds of messages that are unnecessary and bother the user. AN35 describes ways of avoiding false alarms.
  • AN38: Monitoring HWg devices in Nagios - Introduction

    Introduction to Nagios for novice users who need to monitor sensor outputs (such as temperature/humidity in a server room) but have only limited experience with Nagios.
  • Application note 42: 0-20mA or 4-20mA current loop

    When using LAN and GSM sensors by HW group, it is important to understand the difference between a 0..20mA current loop and a 4..20mA current loop. This Application Note explains the difference.
  • HWg-CS57: Remote energy monitoring with ABB DELTAMax M-Bus meters

    Case study showing how to connect ABB M-Bus power meters to the Ethernet. Tested with DHM13007 and DBM23000 three phase ABB M-Bus meters. The ABB ODIN meters family (1 or 3 phase) is also supported with the OA1408 serial to M-Bus converter. You can read values remotely over SNMP or Modbus/TCP...
  • MQTT in practice on Poseidon2 and Damocles2

    MQTT is a lightweight TCP/IP protocol designed for use in IoT applications or in situations where many external devices send data to a central hub. The central hub can aggregate data and further distribute them to all subscribed devices. This Application Note describes how to use the MQTT protocol...
  • SNMPv3 support is here!

    The SNMP v3 is now supported in all the Poseidon2 units. This is a major update that brings many advantages and improvements. The following text will explain all the advantages of the SNMP v3 and how to use it in the Poseidon2 devices.
  • Use of Poseidon2 and Damocles2 with MS Azure

    For work with Microsoft Azure MQTT protocol is used with Poseidon2 and Damocles2 units. It is necessary to have FW 3.2.6 and higher
  • AN24: Using SP Duo dongle with Charon 2 DK

    Application example AN24 connecting SP Duo programming dongle to the Charon2 development kit module. How to connect SP Duo to the DK board over SPI as well as JTAG interface and use in the AVR studio.
  • Controlling digital outputs of Poseidon2, Damocles2 and Ares from the SensDesk portal

    The SensDesk portal supports a new feature for controlling device outputs using the portal web interface. Simply flip a switch in the SensDesk.com web interface, and in a few seconds, a relay at the device flips, too. This Application Note details the advantages and limitations of the CheckPeriod...
  • HTTPS in Poseidon2 and Damocles2

    Poseidon2 and Damocles2 devices support, since FW version 2.0.15, secure https communication with the user (WEB) as well as using XML. This Application Note explains how to use HTTPS and manage certificates.
  • KBA002 - SNMP v3, jeho výhody a nasazení v jednotkách Poseidon2 a Damocles2

    SNMP (Simple Network Management Protocol) je způsob rychlého a nenáročného dohledu zejména síťových prvků a služeb. Stále častěji je však nasazován rovněž pro dohled prostředí v němž tyto prvky pracují a to zejména díky možnosti sledovat teplotu, vlhkost a jiné veličiny ve stejném dohledovém...
  • SNMP – popis rozhraní

    Protokol SNMP (Simple Network Management Protocol) slouží k výměně základních systémových informací pomocí krátkých paketů, posílaných přes UDP/IP.
  • Virtual outputs in Poseidon2 and Damocles2 units

    Virtual outputs in Poseidon2 and Damocles2 units allows to use outputs from different Poseidon2 and Damocles2 units (Box2Box). De facto we are talking about similar feature, which was based on SNMP traps, only in case of Virtual outputs the communication runs more reliable way via TCP/IP protocol,...
  • HWg-WLD Relay: Water leak detector with sensing cable

    HW group would like to present you HWg-WLD Relay. The device indicates a water leak or flood anywhere along the length of the connected sensing cable (up to 85m – 280ft). The sensing cable can be laid along water pipes, walls, or under windows. Water or other liquid anywhere along the entire length...
  • AN40: Certified solution for deep frozen food products

    Poseidon 2250, HWg-STE and Captemp SQL 4 cerified for transport, storage and conservation of deep-frozen food temperature monitoring and control. Solution from Captemp, Lda is compatible with REGULATION (EC) No 37/2005, comply with EN 12830, EN 13485 and EN 13486 standards.
  • Damocles 1208: Remote electricity consumption metering

    Damocles 1208 is a cost-effective Ethernet-enabled device with digital inputs (12) and relay outputs (8) accessible over a LAN. Typical applications involve counting pulses from electricity meters, water meters, gas meters etc. User interaction is simplified by the HWg-PDMS application for Windows...
  • Hsyco & HWg-STE: Htemp sensors integration

    HW group, a well-known manufacturer of IP sensors (HWg-STE: SNMP thermometer, HWg-WLD: Web-based water leak detector, Poseidon, Damocles), has released a series of plug-ins that simplify the use of its IP sensors in Nagios, a popular open-source IT infrastructure monitoring system.
  • HW group at the SENSOR+TEST 2014 trade fair

    HW group on SENSOR+TEST 2014 fair in Nuremberg (3.-5.6.2014). We would like to invite you to our Stand 470 in Hall 12. We will exhibit there with the LUCOM company.
  • HWg-Ares12 – A New GSM/GPRS Thermometer

    HWg-Ares12 enables remote monitoring of temperature, illumination, power supply and other sensors over GSM/GPRS. Its internal back-up battery can keep the measurements running for several hours. The product is designed for dozens and hundreds of installations.
  • HWg-Juno - I/O devices for IP CCTV

    HW group is entering the IP surveillance market with the introduction of HWg-Juno. HWg-Juno is a specialized device for integration of I/O’s into Genetec’s Omnicast. We are thrilled to bring to market HWg-Juno as first dedicated IP I/O device supporting the Genetec Protocol. Now you can simply...
  • HWg-Juno: A new family of I/O devices for IP CCTV

    HWg-Juno is an I/O device for IP CCTV integration. You can simply connect digital inputs & relay outputs to your current central IP video management system. HWg-Juno support protocols for seamless integration with most IP Video software packages.
  • HWg-PDMS: Monitoring software

    HWg STE alerts by e-mail to temperatures outside of a safe range. Supplied with a power adapter and one temperature sensor, another temperature/humidity sensor can be connected.
  • HWg-Push protocol

    HWg-Push is a protocol for active communication from a device (IP sensor) to a central server.
  • HWg-SMS-GW: GSM gateway for sending SMS alarms

    HW group is featuring a GSM gateway, which eases the work and lowers the administration expenses. HWg-SMS-GW is designated for sending alert SMS messages from HWg devices. No software is required and the gateway works on LAN network in Box-2-Box (Peer-to-Peer) mode.
  • HWg-STE plus: Ethernet thermometer with Digital Inputs

    Company HW group s.r.o. is in now introducing a new Ethernet monitoring device HWg-STE plus for temperature and humidity measuring. Sensors connected to this unit can be viewed through a web interface or applications for smartphones and this Ethernet thermometer has also 2 additional digital inputs...
  • HWg-STE PoE: SNMP thermometer

    HWg-STE PoE is a web-enabled temperature (humidity) sensor with Power over Ethernet capability (PoE IEEE 802.3af) that simplifies installation. Measured temperature and humidity values are available over SNMP or through central Windows software (available free of charge).
  • HWg-WLD: Water flood detector

    HWg-WLD is a network-enabled water leak detector with a water-absorbing sensing cable. HWg-WLD features a built-in web server, SNMP support, and e-mail alerts to flooding. HWg-WLD can remotely control a relay output over the network (a relay is switched when a water leak is detected along the...
  • IP sensors by HW group easily work with Nagios

    HW group, a well-known manufacturer of IP sensors (HWg-STE: SNMP thermometer, HWg-WLD: Web-based water leak detector, Poseidon, Damocles), has released a series of plug-ins that simplify the use of its IP sensors in Nagios, a popular open-source IT infrastructure monitoring system.
  • IP WatchDog HWg-WR02a: Ping restarter

    IP WatchDog WR02a monitors whether a controlled device, or an Internet connection, is “alive”. If the correct reply is not received in time, the controlled device is restarted using a relay, or a back-up connection is activated.
  • PortBox2: Full RS-232 and RS-485 Ethernet convertor

    HW group presents a device which allows you to access an RS-232 or RS485 serial port remotely over Ethernet. By this, it allows you to control for example serial printers, displays, light signalisation or industrial machines remotely. A typical use is also in attendance systems, security alarms or...
  • Poseidon 4002: Rack mount environment monitoring

    The Poseidon 4002 is a 19" 1U rack mount system for datacenter temperature and environment monitoring. The Poseidon presents the solution for monitoring of the racks and computer rooms (temperature, humidity, electricity supply, access to the room, detectors). The device alerts by e-mail, SNMP...
  • Poseidon and IP cameras: Focus on the spot where something is going on

    “ATEAS Security System and HW group have interconnected ATEAS, the IP surveillance system, with external sensors using the Poseidon product.
  • Poseidon2 - a new generation of remote sensor monitoring over LAN

    HW group s.r.o. has recently introduced two new generation models from a Poseidon2 product family, designed for remote monitoring in IT environment.
  • Poseidon2 3468 – Sensors and detectors monitoring over Ethernet for industrial applications

    HW group s.r.o. has recently introduced two new generation models from a Poseidon2 product family, designated for remote monitoring in industrial and telco environments.
  • SensDesk: Online sensors monitoring provided for free by a new portal

    Anyone connected to Internet can now remotely monitor temperature, humidity and or for example appliances power input. Sensor units, connected to an IP network, communicate with a web portal SensDesk, which offers its users a simple overview and an option to work with the collected data.
  • Sensor monitoring in Nagios over LAN and GSM/GPRS

    HW group introduces its new HWg-Push Nagios collector – a simple way of connecting LAN and GSM/GPRS sensors to Nagios-based monitoring systems. For a system integrator, this means reduced costs for monitoring moving sites or sites that are difficult to connect to a standard LAN. Moreover, remote...
  • The PortStore with PBX

    A typical application of the PortStore and PortStore2 devices is storing a CDR/SMDR from PBX serial port, which can be then accesed over intranet or Internet network. You can also store tarification (call accounting) data to the PBX using the RS-232 interface.