Custom Monotub Hygrometer/Thermometer | Push-In Gauge – Midwest Grow Kits

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Custom Monotub Hygrometer/Thermometer

(23)
$899 $1299
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Push-in monotub hygrometer/thermometer with 5-second sampling, ±2% RH accuracy, and a -58° to 158°F range. Universal fit for Grower's Select, Max Yield Bins, and North Spore monotubs; LR44 battery included.

🔥 627 purchased in the last 30 days
⭐ 5,000+ units sold

Description

The Custom Monotub Hygrometer & Thermometer is a compact, fast-refresh environmental monitor built for monotub mushroom cultivation. It gives you clear, at-a-glance humidity and temperature readings so you can maintain stable fruiting conditions with less guesswork — helping you decide when to mist, adjust airflow, or fine-tune your setup.

With a quick 5-second sampling period, wide measurement ranges, and a high-accuracy ±2% RH sensor, this durable gauge is an easy upgrade for any Grower's Select monotub — or any standard monotub, including Max Yield Bins and North Spore.

  • SamplingEvery 5 Sec
  • RH Accuracy±2%
  • Temp Range-58° to 158°F
  • Humidity Range10–99%
  • Size2.0″ / 2.6oz
  • Push-In Probe
  • Monotub Mount
  • Fast 5-Sec Refresh
  • Battery Included
  • Universal Fit

Why Growers Choose This

  • High accuracy — ±2% RH for dependable humidity tracking
  • Fast updates — 5-second sampling for responsive monitoring
  • Wide ranges — -58°F to 158°F and 10%–99% RH coverage
  • Ready to use — includes LR44 battery out of the box
  • Compact fit — 2.0″ diameter fits cleanly inside any monotub
  • Lightweight — 2.6oz (24g) for easy placement and mounting
  • Universal compatibility — works with Grower's Select Monotubs and most standard monotubs, including Max Yield Bins and North Spore

What's Included

  • 1× Custom Monotub Hygrometer & Thermometer digital gauge
  • 1× LR44 lithium button battery (included, ready to use)
  • 1× retail box with instructions

Specifications

Specification Detail
Temperature Range -58°F to 158°F
Humidity Range 10%–99% RH
Accuracy ±2% relative humidity
Sampling Period 5 seconds
Power LR44 lithium button battery (included)
Mounting Push-in fit, 2.0″ diameter

How It's Used

  1. Push the gauge into one of the side holes on your monotub and hold the power button on the back for 3 seconds.
  2. Let the unit acclimate for a few minutes after placing it.
  3. Check readings during colonization and fruiting to track trends and stability over time.
  4. Use the data to refine misting, ventilation, and airflow for more consistent conditions.
Placement tip: for best accuracy, position the gauge near substrate height and away from direct water droplets, pooling condensation, or heavy mist impact.

Frequently Asked Questions

How do I install this in my monotub?

Push the gauge into one of the side holes on your monotub and hold the power button on the back for 3 seconds to turn it on. No tools or wiring required.

Will this fit my tub if it's not a Grower's Select monotub?

Yes. At 2.0″ in diameter, it's built for universal compatibility and fits most standard monotubs, including Max Yield Bins and North Spore.

How often does it update its readings?

Every 5 seconds, so you can catch environmental swings quickly and make small adjustments before conditions drift too far.

Does it come with a battery?

Yes, it ships with an LR44 lithium button battery already included and ready to use.

How is this different from your greenhouse hygrometer or mini hygrometer/thermometer?

This gauge is a push-in design made specifically for monotub side holes. Our Universal Greenhouse Hygrometer/Thermometer instead mounts through a cut hole with a twist-lock housing, made for greenhouse and Ecosphere-style panels. Our Mini Digital Hygrometer/Thermometer is a no-probe unit that clips to the side of any container rather than pushing into a hole.