4-20mA Monitor Pack LAN/Wi-Fi

Code: 378
Not rated
€391 €473,11 incl. VAT
In stock (>5 pcs)

Universal package for remote monitoring of values from any industrial probes with 4-20mA output. The pack can monitor values from generic sensor probes with 4 to 20 mA DC industrial output. A sensor probe is not included in this pack. Connected to your local LAN or Wi-Fi network. Powered from external Wall-plug power adaptor or PoE (Power over Ethernet). A free or paid portal is available.

When the device is connected to the public internet, current sensor values and alerts are available from anywhere and can be displayed on mobile phones, tablets, notebooks... Even the free portal displays graphs and sends E-mail alerts/alarms when monitored values are too high or too low. 


Detailed information

Product detailed description

Mobile App is available for your mobile phone, even for the tablet installed on the wall in the warehouse, office, or factory hall. 

2 portal options by HW-group:

Remote monitoring units (sensors) are managed from one place – Cloud Portal - including reports & alerts.

  • Free portal
    www.hwg-cloud.com - HWg sensors & devices in the cloud, free service with email alerts up to 20 devices connected to one user account

  • Paid portal
    www.sensdesk.com - Monitoring and Alerting system in the cloud. PDF reports, SMS & Voice call alerts, graphs, multigraphs, and up to 2 years of data history. Paid as a one-year subscription plan.

Alert options (when every second matters):

  • Voice-Call alert (paid service)
  • SMS (standard text message (paid service)
  • E-mail alerts within few seconds since value out of safe-range (email can be repeated every 30 minutes if alarm still valid or delayed if values are still too high after 30 minutes)
  • Alarm escalation based on sensor value can alert another E-mail / mobile phone number if needed.
  • Visual or Audio Alerts: Local red light or alert on a tablet on the wall or even siren (paid service)
  • The alarm can be delayed, and an alert is sent 30 minutes after the value is still too high or too low.
  • Alert can trigger action on another connected device or system - add SD-2xOut to the system or integrate into 3rd party SW (SNMP / XML Open API)

Alerts can be triggered by:

  • Sensor value (out of Safe Range / Notice range).
  • The sensor disconnected from the device.
  • Device power failure.
  • The device is not found/disconnected from the Internet.

Sensor values can be displayed:

  • Web of the portal (compatible with mobile phones)
  • Mobile phone App (coming soon)
  • Android / iOS-based Tablet installed on the wall (showing selected sensor values only)
  • 3rd party SW (SNMP / XML Open API)


The device has to be connected to the public internet to one of SensDesk's technology-based portals (HWg-cloud / SensDesk.com / other).

  • The device can be pre-configured. Just click it to the power & LAN on the remote site.
  • Sends E-mail alerts when values are out of the set range
  • Displays current values on the mobile app (Wall installed tablet)
  • History / Graph (chart) with values (10 / 30 / 365 / 730 days)
  • Periodical PDF or CSV reports (paid service only)
  • Voice call and SMS alerts (paid service only)

Solution features:

  • Connectivity by LAN (Ethernet) or Wi-Fi (External antenna is available)
  • External 4-20mA sensor / Convertor
    • For connection of 1 external industrial probe with 4-20mA output
    • Supports any industrial sensor probes with 4-20mA output
    • The measured 4-20mA current is electrically isolated from the 1-Wire UNI bus (RJ11).
    • 2wire current loop ("sink" type)
    • Conversion of values from 4-20mA to desired quantity/units (°C, °F, %PH, etc.…) is possible directly in the sensor (Ask for calibrator tools) or by Virtual sensor in the SensDesk.
    • 8-points calibrating table/curve to set measured output appropriate to related industrial sensors
    • Provides 1 sensor value
    • Requires an external power supply (for the Sensor 4-20mA) to provide energy for 4-20mA current loop.
    • The sensor can be used in industrial environments. The current loop can be hundreds of meters long.
    • Output reading in [mA] can be calibrated and/or converted to other units (e.g. fuel level in the tank in [m]) directly in the sensor.
  • Up to 4 sensor values (in total) can be connected to the device.
  • Included sensor: current sensor / convertor 4-20mA
  • Power for SD-2x1Wire device from PoE / External power adaptor
  • International Wall plug power adaptor included (EU, UK, US power sockets included)

Solution extension possibilities:

  • Additional RJ11 sensors can be connected directly to the device (max 3 additional sensor values).
  • External RJ11 sensors can be placed up to 60 meters from the main unit (RJ11 prolong cabling).
  • You can connect additional RJ11 sensors (max 60m distance) of Temperature, Relative Humidity, Light intensity, etc.

 Solution Pack contains:

  • SD-2x1Wire Unit for connection to the web portal
  • Sensor 4-20mA 1W-UNI + 3m long connection cable (RJ11)
  • Power adaptor with EU, UK, US wall plugs (5V/1,2A)
  • Power adaptor for Sensor 4-20mA 1W-UNI?

 Can be interesting for you:

Alert to any Alarm state can also be reported by switching ON external light/siren. Use the LAN/Wi-Fi or NB-IoT device with relay outputs.

Additional parameters

Category: Solutions
Warranty: 2 years
Portal alerts: E-mail, SMS, Phone Call
Power: External 5V DC, PoE
Monitoring: Current
Optional extensions: AI (Analog Inputs), RJ11