Ambient Weather WH31SM User Manual

Version 1.0 ©Copyright 2020, Ambient LLC. All Rights Reserved. Page 1
Ambient Weather WH31SM Soil Moisture Sensor
Table of Contents
1. Introduction ..................................................................................................................................... 1
2. Features ........................................................................................................................................... 2
3. Getting Started ................................................................................................................................ 3
4. Setup Guide ..................................................................................................................................... 3
4.1 Batteries .................................................................................................................................. 3
4.2 Pre-installation ....................................................................................................................... 3
4.3 Sensor Placement ................................................................................................................... 3
5. Console ........................................................................................................................................... 4
5.1 Display ................................................................................................................................... 4
5.2 Sensor Channel Designation .................................................................................................. 4
5.3 Calibration .............................................................................................................................. 4
5.3.1 0% Soil Moisture Set Point ................................................................................................ 5
5.3.2 100% Soil Moisture Set Point ............................................................................................ 5
6. AmbientWeather.net ........................................................................................................................ 6
7. Specifications .................................................................................................................................. 6
7.1 Sensor Specifications ............................................................................................................. 6
7.2 Wireless Specifications .......................................................................................................... 6
7.3 Power Consumption ............................................................................................................... 6
8. Troubleshooting .............................................................................................................................. 7
9. Liability Disclaimer ........................................................................................................................ 7
10. FCC Statement............................................................................................................................ 7
11. Warranty Information ................................................................................................................. 8
12. California Prop 65 ...................................................................................................................... 8
1. Introduction
Thank you for your purchase of the Ambient Weather WH31SM Soil Moisture sensor. The following
user guide provides step by step instructions for installation, operation and troubleshooting. To
download the latest manual and additional troubleshooting tips, please visit:
https://help.ambientweather.net/help/
The soil moisture sensor is not a stand-alone device, and requires a WS-2000 or WS-5000 weather
station console to view and upload the data to our cloud hosting service at AmbientWeather.net.
To see if your weather station is compatible, please visit:
https://help.ambientweather.net/product/wh31sm/
The following WS-2000 and WS-5000 console firmware versions or greater support the soil moisture
sensor:
• Firmware revision number: V1.6.0
• WiFi Firmware: AMBWeatherV4.2.0

Ambient Weather WH31SM Specifications

General

Humidity Range	0% to 100%
Soil Moisture Measurement Range	0% to 100%
Power Source	2 x AAA Batteries
Update Rate	60 seconds
Frequency	433 MHz
Temperature Range	-40 to 140 °F (-40 to 60 °C)
Resolution	0.1
Battery Life	Up to 12 months
Transmission Range	300 feet (91 meters) line of sight
Sensor Type	Soil Moisture Sensor

Summary

Introduction

Product Features

Getting Started and Setup

Batteries Installation

Installs 1x AA battery and closes the battery door for sensor operation.

Pre-installation Verification

Verifies proper operation by testing sensor readings in open air and water.

Sensor Placement Guidance

Guidance on digging a hole and gently inserting the sensor, avoiding damage.

Console Operation and Calibration

Console Display Overview

Describes how soil moisture is displayed on the console and auto-scrolling feature.

Sensor Channel Designation

Explains channel designation based on power-up order and recommends individual verification.

Soil Moisture Calibration

Details the procedure for two-point linear calibration of the soil moisture sensor.

AmbientWeather.net Integration

Technical Specifications

Sensor Specifications

Details moisture range, resolution, and IP66 waterproof rating.

Wireless Specifications

Covers transmission range, update rate, and RF frequency.

Power Consumption

Specifies battery type, life, and recommendations.

Troubleshooting and Support

Liability Disclaimer and Safety

FCC Compliance Statement

Warranty Information

California Proposition 65 Warning