VH400 Soil Moisture Sensor Details
Water is the most precious
resource on our planet.
Measure it, control it, and conserve it, with our VH400
soil moisture sensor.
The VH400 is an professional electronic soil moisture sensor.
It is so sensitive, that it can measure the moisture in
your hands when you touch its blade.
Waterproof and Rugged
Made of durable ABS plastic, and fiberglass,
our VH400 moisture sensor is absolutely water proof and rugged,
ready for the most challenging application that you can throw
It can be buried at any depth in the ground, or be inserted
above ground, or into the soil of your potted plants.
Ignores the Salt in your Soil
Most other sensors, especially conductivity or resistance
based sensors are ineffective, because salts and
fertilizers found in soil bias their readings.
The VH400 moisture sensor uses superior transmission
line techniques as does (TDR) to measure the water moisture in
any soil regardless of soil salinity.
Unlike resistive or conductivity sensors,
our probes do not use exposed metal to make measurements.
They will never corrode, or need to be recalibrated.
Thin Blades Prevent Root Damage
Imagine your doctor giving you a
shot with a syringe used for elephants. Ouch!
Your plants are no different, and they will thank you
for not using giant probes to take soil moisture measurements.
We designed the blade of the sensor to be as slender as possible.
It can be inserted into soil and pots with minimal
disturbance to the vital root systems of your plants.
We have yet to find another moisture sensor with a thinner
Rapid Response Time
The VH400 sensors are extremely fast.
The output response is instantaneous with changes to water moisture.
When you pour water on a plant, you will see the change in
moisture in real time.
This rapid response time allows you to walk around, and
spot check the moisture of different soils and plants, by
quickly sliding in the blade, and taking a measurement.
We offer a handheld moisture meter
with the VH400 sensor for this purpose.
Interface Our Sensors to any System
The VH400 will easily interface to any decent data logger,
Customers have connected it to Arduino boards, electron
particle IO boards, and a slew of common microcontrollers.
The output ranges from 0 to 3V so any system that can read
a voltage can interface to it.
For evaluation use a common volt meter to read its
output, and determine the soil moisture level.
Designed to be Indestructible
Our sensor design anticipates every problem you might encounter.
We've added reverse polarity protection to the 3 wire interface.
If by chance you connect the three wires from the cable in the incorrect order to power,
signal and ground, that's okay. The probe will not be damaged.
Vegetronix Modular Building Blocks
We provide modular building blocks that
you need to create your soil moisture application. With these
building blocks, you can create systems that will monitor
soil moisture, and automatically control watering.
For recording data, we carry simple low-cost
data loggers, which
can read up to 8 sensors.
Waterproof wall mountable displays
allow you to see your sensor data, near its source.
For remote viewing of data, we provide a
WiFi Data Logger, which will
read up to 4 sensors, and store data in the cloud.
This Sensor Hub lets you
remotely view your sensor data on your phone's web browser.
You can even receive text messages, and email alerts.
We've partnered with the sensor cloud site -
VegeCloud.com which will graph, store,
and manage your water level sensor data.
Save Money - Stop Over Watering
We are passionate about helping you saving water, and
money. We offer several solutions for your sprinkler systems.
Some sprinkler systems use contact closure rain sensors.
These can be replaced with a combination of a VH400 sensor with a
contact closure relay board.
When the soil is wet, the relay contacts will close, simulating
the result of a rain sensor.
This is more accurate than a rain sensor, because you care
about the soil moisture, and not whether it has rained.
If your sprinkler has no sensor input, use our
Sprinkler Relay Boards.
These connect between the wires of your sprinkler timer,
and your valves. When the clock turns on a particular zone,
the Sprinkler Relay Board blocks the signal to the valve,
if the soil is already wet.
It also turns off the valve mid-cycle as the moisture sensor
reaches the desired moisture level.
Pays for Itself
Water is expensive. We have found that people over water
by as much as 200%. Think about your savings, if you could cut
your water bill in half. Our customers find that our products
pay for themselves in as little as one month.
The VH400 is very low power. It draws only 12mA when activated.
For low power battery applications, the VH400 can be powered briefly
before reading, and then shut down, to conserve battery power.
Not only does the VH400 measure soil moisture, but it can be used
as a water level sensor. One side of the blade has ruled markings
every 10mm for this purpose. As the sensor blade is dipped into
water the voltage output will raise proportionally.
Our sensors come in standard cable lengths of 2 meters, 5 meters and 10 meters.
See the ordering table below.
We Want you to be Happy
Ordering is easy and low risk.
Since we build our own products at our factory,
all of our products are in stock.
When you place your order from our website,
it will ship same day from our factory,
and you'll have it in your hands in just a couple of days.
We ship to nearly EVERY COUNTRY in the world.
If you aren't amazed and delighted by your new VH400
soil moisture sensor,
return it for a refund within 30 days.