Add a real-time wifi-enabled moisture sensor to the mix! View current Equilibrium Moisture Content (EMC), temperature, relative humidity and dew point as well as graphs of historical data on your phone with the Ninja Smoke application.

Availability: 2 week backorder

SKU: harpoon Categories: ,



  • Mesh-protected Weather-proof Temperature/Humidity Sensor
  • Sturdy PLA/PVC spike-shaped enclosure
  • Built-in Wi-Fi (802.11 b/g/n wireless LAN)
  • Standard USB micro power supply
  • Intuitive user interface with Ninja Smoke app for Android/iOS
  • Real time dashboard readouts and graphs over time
  • Notifications when soil is too dry or too moist
  • Integration with other KnowESys automation and control products
  • Web Services API for integration with third party or custom apps
  • Logs data to file once per minute



  • Provides real-time reading on:
    • Equilibrium Moisture Content (EMC)
    • Temperature
    • Relative Humidity
    • Dew Point
  • Automate pumps
  • Export logs for analysis



  • Always on
  • Precision monitoring
  • Real time control
  • No cloud
  • Secure/Private
  • Low power consumption
  • Super easy to use
  • Made in Michigan

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