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HWg-SMS-GW3: GSM puerta para los productos de HW group

HWg-SMS-GW3 es la puerta de SMS para enviar los mensajes de alarmas por LAN. Envía las alarmas de SMS desde otros productos y software por una sola puerta y una sola tarjeta de SIM. No se necesita ningún software, funciona a través de LAN en el nivel de Box-2-Box.

Note: Shorted version - full details in english version.

Los dispositivos de HW group y herramientas de software usan HWg-SMS-GW para enviar los mensajes de texto (SMS). El número de teléfono de destinatario de mensaje está siempre configurado en el dispositivo LAN o software que envía la alarma.

Usando una sola tarjeta de SIM, los usuarios de nuestra Ethernet puerta de SMS – HWg-SMS-GW – evitan la gestión complicada. A diferencia de las soluciones de “SMS por e-mail”, el producto no depende de la conectividad de Internet para enviar las alertas de mensajes.

Además de enviar las alertas de SMS, la puerta de SMS de HW group puede dar la alarma a destinatario por marcar su número y hacerlo sonar por el tiempo breve.

Las aplicaciones de HWg-Trigger y HWg-DCD, igualmente como el online portal de, también soportan HWg-SMS-GW. También está disponible un programa adicional para las alertas de SMS de Nagios.

HWg-Trigger and HWg-DCD applications, as well as the online portal, also support HWg-SMS-GW.
There is a plug-in available for Nagios SMS alerts.

Practical tip: We recommend to avoid pre-paid SIMs, and instead use a regular post-paid plan.

  • Use just a single SIM card to send SMS alerts from all HW group products.
  • No software needed
    The sending device sends the text message directly through the SMS GW (Box-2-Box) over the LAN.
  • Connect the SMS-GW to your account to send alarm messages.
HWg-SMS-GW3: sensores de IP, la puerta de SMS para enviar las alertas en la forma de mensajes desde otros productos


Front panel   Rear panel    Rack 1U montage 

HWg-SMS-GW3 & other devices in Rack Shelf 1U



  • Web-based configuration.
  • No software is needed to run anywhere in order to send text messages.
    Box-2-Box mode allows two devices (e.g. a Poseidon2 and the SMS GW) to communicate over the LAN.
  • Message recipient's phone number is configured in the sending device. One HWg-SMS-GW text message gateway can send SMS alarms to dozens of different recipients.
  • SMS gateway supports a “SMS + Ring” function that dials a call to the alarm message recipient's number and lets the phone ring for a short time.
  • With an external antenna, the device can be used even at places with poor GSM coverage (data center).
  • Quad-Band GSM modem works with GSM coverage anywhere in the world.
  • Examples for programmers on using the product are available in the HWg-SDK (Borland C++, MS Visual C, VB, C#, PHP, JAVA and more).


Basic features

    • Protocolos de comunicación de M2M: SNMP, XML, netGSM (http, SOAP)
    • Memoria interna para la fila de SMS salientes: 100 mensajes
    • Soporte para programadores: HWg-SDK
    • Mecánico: 76 x 93 x 28 mm, montable en la pared, cabe en carril DIN

    Sending SMS alerts from Poseidon units over the LAN

    • Poseidon2 4002 sends an alarm message about a sensor value to Mr. Blue's phone number.
    • Using the Box-2-Box mode, it connects directly to the HWg GSM gateway (no software is needed).
    • HWg-SMS-GW contains a SIM card and sends cell message alerts on behalf of all devices in the network.
    • Message recipients' phone numbers (Mr. Purple, Mr. Green, ...) are configured in the sending device.
    • Together with the text message, it is also possible to call the recipient and let the phone ring for a short time (configured in the sending device).

    HWg-Trigger: Monitoring software with SMS alarms over SMS GW

    • HWg-Trigger, an application for MS Windows, monitors the function of other products (Poseidon2 3266, HWg-STE Push, Damocles 1208, Poseidon 4002) over the LAN.
    • If a product is inaccessible or fails, a SMS alert is sent using HWg-SMS-GW in the same LAN.
    • Recipients' phone numbers (Mr. Purple, Mr. Green) are configured in HWg-Trigger.
    • HWg-SMS-GW contains a SIM card and sends text message alarms to different phone numbers.


    Alerts to events: HWg-Trigger

    HWg-Trigger software allows reacting to events. For instance, “If the device at the address X does not work, do Y”. The software runs on Windows in the background and keeps checking the configured conditions.

    • Monitors IP sensors in the LAN: sends a SMS if a sensor is disconnected
    • Monitors IP sensors in the LAN: sends a SMS in case of device failure
    • Monitors IP sensors in the LAN: sends a SMS in case of sensor value out of Safe Range
    • 30-day trial version is free of charge
    • Runs in the background as a Windows service (NT service)

    Nagios SMS alerts

    • Nagios NMS monitors other devices using SNMP.
    • In the Nagios system, a plugin enables SMS alerts over HWg-SMS-GW gateway.
    • The plugin configuration includes the phone numbers of text message alert recipients.
    • For details about obtaining and using the Nagios plugin, see the product manual.
    • The plugin was created in cooperation with Netways (MonitoringExchange:

    SMS alerts from the online portal

    • LAN and GSM sensors (HWg-STE Push and Ares 12) send data to the online portal.
    • Your user account includes the IP address or DNS name of your HWg-SMS-GW (must be accessible at a public IP address).
    • The configuration of each sensor in your SensDesk account can include a phone number for alarm messages.
    • Note:
      Ares 12 sends the alert to an out-of-range sensor value faster than the SensDesk portal; however, SensDesk allows to monitor and configure all alarms over the Web at a single place. In addition, SensDesk also monitors the network connectivity of Ares units, so it can for instance alert to an Ares unit's network connection failure.


    Frequently Asked Questions

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      Spam protection. How many is SIX times six?

    • How many SMS recipients can be configured?
      Poseidon2 sends text messages to a maximum of 5 phone numbers (Box-2-Box mode).
      In the HWg-Trigger utility, 3 numbers can be set for each condition. The number of conditions is limited to 90.
    • Can I use HWg-SMS-GW as a cell message gateway to send text messages from my own software?
      Yes, communication examples in various programming languages are available in the HWg-SDK.
    • Can I send SMS alerts from the service?
      Yes. However, the HWg-SMS-GW must be accessible at a public IP address so that the online service can reach it.
    • What can SNMP in HWg-SMS-GW be used for?
      SNMP can be used to monitor and supervise the Ethernet GSM gateway.
    • How is GW3 different from the previous GW2 model?
      HWg-SMS-GW3 is a 100% replacement for the previous HWg-SMS-GW2 model.
      HWg-SMS-GW3 is smaller, has a larger memory for the outgoing message queue, and supports SNMP.
    • Where can I find the prices of your devices?
      Ask our distributors, or request a quote directly from us using the form at this page.


    How to order

    Order item  
    HWg-SMS-GW3 SMS Gateway start set photo
    Central GSM SMS gateway for sending text messages from other HW group devices over the LAN. Includes an internal GSM modem, an external antenna with 3m cable, a power adapter and a CD.
    HWg-SMS-GW3 plain HWg-SMS Gateway unit only
    GSM gateway unit. No accessories included (no power adapter, no antenna etc.)
    Mount plate E – 1U Mounting bracket for a rack, 1U installation of HWg-SMS-GW3, HWg-Ares, Poseidon2 3266/68 and other products. - item photo
    Mount plate D Bracket for attaching HWg-SMS-GW3, HWg-Ares, Poseidon2 3266/68 or other products to a wall. - item photo
    HWg-SMS-GW2 HWg-SMS Gateway start set
    GSM SMS gateway for sending text messages from other HW group devices over the LAN. Includes an internal GSM modem, an external antenna with 3m cable, a power adapter and a CD.
    HWg-SMS-GW2 plain HWg-SMS Gateway unit onlyphoto
    GSM gateway unit. No accessories included (no power adapter, no antenna etc.)



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    Mensaje de alarma, alarma de Sms, alerta de mensaje, alerta de sms, tarjeta de sim, Ethernet puerta de gsm, sms puerta de alarma, alerta de SMS de IP sensores, mensaje de IP sensores


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