Whisker.Block® & Smart.Hub™

Battery powered (15+ year), long range (2+ mile) wireless IoT sensors and innexpensive cellular IoT gateways for nearly every application.

Whisker.Block battery powered, long range wireless IoT sensor

Simple & Efficient Asset Monitoring
For a Variety of Applications and Markets

tank level monitoring
Tank Levels

Enterprise grade continuous tank/tower level monitoring for water/wastewater, oil & gas, and agriculture.

temperature monitoring
Temperature Monitoring

Refrigerator and freezer temperature monitoring for restaurants, bakeries, and food production.

IoT solutions for hospitals and clinics

Temperature, Pressure, and Humidity monitoring for vaccine storage, treatment rooms, surgery units, etc.

IoT solutions for remote industry 4.0 applications

Real-time remote monitoring and management of PLCs, VFDs, or any Modbus enabled device from anywhere in the world

Whisker.Block sensors are part of a comprehensive, enterprise grade IoT solution

Whisker.Block® Features

Battery Powered, Long Range Sensors

Whisker.Blocks are battery powered, long range IoT sensors with multiple I/O configurations. They work together with our Smart.Hub to create an easy to use, simple to install IoT solution perfect for a large variety of applications.

  • 10-20 year battery life*
  • 900MHz, 2+ miles proprietary wireless
  • IP67 rugged enclosure
  • Internal Temperature Sensor
  • Up to 4 external I/O
  • 4-20mA, 0-5V, 0-10V Analog
  • Digital inputs
  • Modbus RS-485
  • 2Smart Sensor Interface
  • -40°C to +85°C Temp Range
  • Internal 5V/18V Sensor Power
  • 5 Minute Sampling Rate

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How It Works

Enterprise IIoT Made Simple

Whisker.Blocks® are battery powered, long range wireless sensors that can monitor up to 4 analog or digital inputs, or 32 Modbus registers. They collect data every 5 minutes and forward it to an in-range Smart.Hub gateway. The Smart.Hub gateway uses an internal CatM1 cellular modem to communicate the data to the Whisker.io cloud. Each gateway can support 50 or more Whisker.Blocks and can also interface to local automation via a Modbus RS-485 interface. The Whisker.io cloud includes an automation agent that handles alerts and reporting and a web portal that provides easy to use tools for configuration, analytics, and visualization.

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Sample oil field application using Whisker.io solution

Smart.Hub™ Features

Cellular IoT Gateway

Our Smart.Hub IoT Gateways collect data from Whisker.Block sensors and forward it to the cloud using a private CatM1 cellular network. Our gateways can also interface with existing automation technologies such as PLCs via Modbus RS-485, allowing you to remotely monitor and manage them from anywhere in the world using any computer or mobile device.

  • CatM1 cellular connection
  • Supports more than 50 Whisker.Blocks per device
  • Modbus RS-485 interface
  • Multiple power options - MicroUPS or 8-32V DC
  • -40°C to +85°C Temp Range
  • Alerts on power loss/restoration when MicroUPS is used

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Smart.Hub LT gateway for Whisker.Block wireless sensors

Featured Application

Remote Water/Sewage Monitoring

Water and waste-water monitoring is super easy with Whisker.Blocks. Each Whisker.Block can monitor up to 4 tanks using analog pressure, ultrasonic, radar, or float level sensors. 18V sensor power is provided from the internal batteries and is switched on just prior to sampling to ensure long battery life. Level measurements are taken every 5 minutes and reported to the Whisker.io cloud via a Smart.Hub gateway.

Sewage lift stations and septic systems can also be monitored with our Whisker.Block Lift Station monitor. This special Whisker.Block configuration can monitor 4 floats (AC or DC), two duplex pumps (run time, error, and current), and has two extra 4-20mA inputs if you want to use analog level measurement instead of the floats. Using pump current measurements, it can immediately notify you when a pump is seized or blocked. You can also get configure text or email alerts on any of the float switches or pump error inputs.

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Sample water application for Whisker.io IoT solution

Works With Whisker.io®

Mobile First IoT Cloud App

Mobile first design - monitor and control your assets using your mobile phone

Whisker.Block® sensors work seamlessly with our Whisker.io® cloud platform, providing an easy to use set of tools you can use to monitor and manage your assets from anywhere in the world using any computer or mobile phone.

  • Easy To Use
  • Mobile First Design
  • Enterprise Grade
  • Custom User Interfaces
  • Custom Dashboards
  • Asset Health Reporting
  • Smart Alerts

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Get Your Whisker.Blocks and Smart.Hubs


Ambient Temp

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0-5V Analog In (x2)

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4-20mA Analog In (x2)

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Modbus RS-485

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Smart.Hub™ LT Gateway

  • Wall Power/MicroUPS
  • Supports more than 100 Whisker.Blocks
  • IP67 Enclosure
  • Product Data Sheet
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* Price includes Sent.io™ Direct2Cloud IoT gateway, data fees, and full access to all features of the Whisker.io™ IoT portal. Billed annually. External sensors not included unless specified.