Leaf Wetness Smart Sensor - S-LWA-M003

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The Leaf Wetness Smart Sensor provides accurate leaf wetness data in a number of growing and research applications. The sensor is ready to use and does not require any painting or coating. It uses a capacitive grid that is less sensitive to surface residues than resistive grid-based sensors, and comes preconditioned for consistent measurements between sensors and for long-term stability. Along with a 3-meter cable, a mounting bracket is included so the sensor can be easily positioned to mimic the wet-dry characteristics of the plants being studied.

  • Does not require any painting or coating
  • Preconditioned for consistent measurements
  • 3-meter cable and mounting bracket included

The S-LWA-M003 Sensor is for use in Outdoor environments

The S-LWA-M003 Sensor supports the following measurements:

Leaf Wetness

Onset # S-LWA-M003
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Measurement range: 0 (dry) to 100% (wet)
Operating Range: -40°C to 70°C, (-40°F to 158°F)
Repeatablility: ± 5%
Resolution: 0.59%
Stability: < ± 5% per year
Interchangeability between sensors (over the range 10-90%): ± 10%
Measurement Averaging Option: No
Housing: No coating required
Sensor Type: Capacitive Grid
Sensor plate: 4.7 cm x 5.1 cm (1.8” x 2.0”)
Tube: 12.2 cm length x 1.8 cm diameter (4.8” x 0.7”)
Cable length: 3m (9.8’)
Approximate Weight: 127 g (4.5 oz) for sensor, and 290 g (10.2 oz) with mounting bracket
Mounting Bracket: 20 cm long (8”);Sensor can be positioned at any angle between 0 and 90 degrees (vertical)
Number of Data Channels: 1

For mounting on Onset tripods or masts 3.2 cm to 4.1 cm (1 1/4” to 1 5/8”), Cross Arms (Part # M-CAA or M-CAB), or flat surfaces. U-bolt and tie-wraps included.

Description: ce - The CE Marking identifies this product as complying with all relevant directives in the European Union (EU)

Part Number
Carrying Case
Pelican Case

Extension Cables
Weatherproof Extension Housing

Smart Sensor Extension Cable - 2m length

Smart Sensor Extension Cable - 5m length

Smart Sensor Extension Cable - 10m length

Smart Sensor Extension Cable - 25m length

Items used with above items
Weatherproof Extension Housing

Compatible Loggers
Part Number
USB - w/external sensor
HOBO U30-NRC Weather Station Starter Kit

USB Data Loggers - requires external sensor
Weather Station

This product has been discontinued.

Micro Station

USB Weather Station
Starting at $418

Web-based Monitoring Systems - via remote communication
U30 - Cellular communications
Starting at $850

U30-WIF - Wi-Fi communications
Starting at $789

U30-ETH Ethernet communications

Documentation for the S-LWA-M003


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