HW group Posiedon 3266

Temperature & Humidity monitoring + 4 Dry Contact Inputs

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Key Features
  • Web based monitor with many sensors
  • Temperature, humidity, flood, gas, smoke...
  • ...door contact and more
  • Up to 8 1-Wire sensors
  • 4 Digital inputs
  • Data-logging funtion with up to 250,000 records
  • 4-20mA and 0-60V sensors
  • email alerts

The Poseidon 2 3266 Websensor is one in a series of an environmental monitoring devices designed for remotely monitoring of temperature, humidity and dry contacts (door contacts) in datacentres, server rooms - or any space that relies upon a steady and predictable environment and has access to the internet. The 32xx Websensor series are sensors with built-in signal conditioning and a web address. Users are able to access the sensor directly via PC or over ethernet to any remote site and remotely monitor the data which can be viewed at any time through a web-browser and receive alarms via SMS (3265 version) or email.

The 3266 netsensor connects directly to your Ethernet network via a 10/100 Mbps switch or hub port. It provides monitoring for temperature, relative humidity. The 3266 is ideal for monitoring environmental conditions in server rooms and wiring closets.

The 3266 supports up to 3 connected sensors, using the Hub-5way for more than one sensor, for temperature and/or humidity monitoring. Each sensor monitors safe range. In case the value exceeds the range (Alarm status) the device notifies user via SNMP trap or Email. The 3266 also has 4 dry contact inputs to enable monitoring of door closure or similar with simple door contact type switches

With the HWg-PD Trigger software, alerts can be redirected to SMS or processed according to the PD Trigger rules. You can switch remote relay over IP or shut down a PC.

The Poseidon 3266 can be used with 3 temp / humidity sensors. Its 4 Dry contact inputs allow other types of sensors (see sensoros and accessory section) to be connected to it for increased capability.


Remote monitoring in IT environments

  • Measures temperature and humidity remotely over the network, includes a data logger.
  • Connects to any SNMP system.
  • Temperature monitoring at several places
  • Several Poseidon2 units can be linked to a single account at the SensDesk.com online portal. All readings are accessible anywhere using a web browser or a mobile app for Android and Apple.

Cooler and freezer monitoring

  • Monitor your technology or your food or pharmaceuticals storage.
  • We recommend PDMS as the temperature monitoring software.

UPS monitoring

  • Monitor the states and voltages of uninterruptible power supplies, monitor diesel generators remotely.
  • The unit sends an alarm in case of power failure.

Surveillance systems

  • Sensor readings and detector states can be fed to IP camera systems of various brands.
  • External detectors (door contacts, PIR, smoke detectors etc.) can be easily connected to the digital inputs.

A/C monitoring:

  • A/C failure
  • Power supply failure
  • Temperature too high, or a leak of the coolant.

Industrial applications

  • Remote monitoring of dry contacts, 4-20mA probes or Pt-100 and Pt-1000 temperature probes.
  • Data logger stores the values in the internal memory.

Key features

  • Ethernet: RJ45 (10BASE-T)
  • Web: Built-in web server
  • Sensors: 8xRJ11 1-Wire (max 3 temperature / humidity probes)
  • Inputs: 4 digital inputs (dry contact)
    (door contact, smoke detector, 11/230VAC supply detector, water leak detector, cooling fan failure detector)
  • Alerts (value out of defined safe range): SNMP trap, E-mail
  • M2M communication protocols: SNMP, XML, Modbus/TCP
  • Support for programmers: HWg SDK

Supported software:-

  • HWg-PD Trigger: Alert redirection to SMS, Pop-Up, shutdown PC, ..
  • HWg-PDMS: Logging of values, graphs, export to MS Excel
  • CapTemp: Visualization on a map, control of outputs, alarm redirection to SMS
  • Third-party SNMP software

For other combination of sensors please choose from the list in sensors and accessoriies section.


  • Temperature range - (temp1-wire sensor): -10°C to +80°C +/- 0.5 °C
  • Temperature range - external temp sensor:- -30°C to +105°C, IP67 stainless steel sensor
  • Relative humidity range: 0 to 100% +/-4% from 0-90% and 15°C to 30°C
  • SMTP E-mail
  • SNMP (R/W), Trap

fridge freezer monitoring ethernet temperature sensor

  • Poseidon 3266 ethernet temperature and humidity sensor
    Poseidon 3266 ethernet temperature and humidity sensor
  • Poseidon 3266 DIN rail
    Poseidon 3266 DIN rail
  • Posiedon 3266 temp and humidity lan digital io
    Posiedon 3266 temp and humidity lan digital io
  • Posiedon 3266 with rack mount adaptor
    Posiedon 3266 with rack mount adaptor
  • Posiedon 3266 side
    Posiedon 3266 side
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