SKU: 17935993189
rubber tree moisture meter

rubber tree moisture meter PLT-1 Ultimate Plant Sensor

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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

rubber tree moisture meter PLT-1 Ultimate Plant SensorThe Apollo Automation PLT 1 is an ESP32 C3 based indoor plant multisensor that measures soil moisture (capacitive), air temperature, humidity, LUX, and UV, which can be used with Home Assistant via ESPHome! It also features an onboard piezo buzzer and addressable RGB LED. Soil temperature can be measured using the optional temperature probe add on. The sensor comes in a battery or non battery version, with the non battery (USB C powered, 5V 1A)

The Apollo Automation PLT-1 is an ESP32-C3-based  indoor plant multisensor that measures soil moisture (capacitive), air temperature, humidity, LUX, and UV, which can be used with Home Assistant via ESPHome!

It also features an onboard piezo buzzer and addressable RGB LED. Soil temperature can be measured using the optional temperature probe add-on. The sensor comes in a battery or non-battery version, with the non-battery (USB-C powered, 5V 1A) version being significantly smaller - select an option before adding to your cart.

The PLT-1 uses a capacitive soil moisture sensor, which offers much better accuracy and durability compared to resistive sensors. Additionally, the ground contact portion is protected with a conformal coating, ensuring longevity and resistance to environmental factors.

Both versions of the PLT-1 come with a 3D printed case.

Note: The PLT-1B (battery version) does not include a battery or charger. You will need to source their own rechargeable 18650 batteries for the battery version, and a charger. Battery life is estimated at 6 months based on a quality rechargeable 18650 and the default sleep / wake settings.

Features

  • ESP32-C3-Mini based: ESPHome compatible, allowing plant monitoring in HomeAssistant
  • Capacitive Soil Moisture Sensor with conformal coating: Accurate and durable, perfect for monitoring plant hydration
  • AHT20-F Air Temperature & Humidity Sensor: Dust-protected for reliable air condition tracking
  • LTR390 UV & LUX Sensor: Measures light and UV exposure, ensuring optimal lighting for plants
  • RGB LED: Customizable for notifications (e.g., watering alerts, light levels)
  • Piezo Buzzer: Provides audible alerts for important plant care events
  • Battery and Non-Battery Versions: Flexible power options to suit different setups and needs
  • Home Assistant Integration: Easily automate and monitor plant health through your smart home system
  • Can be used with an optional DS18B20 Waterproof Soil Temperature Probe: Monitors soil temperature with precision

    Use Cases

    • Automated Watering: With its capacitive soil moisture sensor, you can set up automations to water plants only when moisture levels drop below a certain threshold.
    • Optimising Sunlight Exposure: Use the LUX and UV sensors to monitor light levels, ensuring your plants get the right amount of sunlight. Automate window shades or grow lights based on current light conditions.
    • Temperature & Humidity Management: Track air temperature and humidity with the AHT20-F sensor, adjusting indoor climate controls (like fans, heaters, or humidifiers) to maintain ideal growing conditions.
    • Soil Temperature Monitoring: Use the optional waterproof soil temperature probe to monitor and control soil warmth for temperature-sensitive plants, especially in colder months.
    • Visual & Audio Alerts: The RGB LED can be programmed for visual notifications, such as turning red when soil is dry or green when conditions are optimal. The piezo buzzer can alert you if immediate action is needed.

    Community Reviews

    Resources

    Documentation

    Datasheets

    3D Print Files

    Apollo Automation Social

    Package Contents

    • Assembled PLT-1 sensor with 3D printed case
      • Select a version before adding to your cart

    Batteries, charger and USB cable not included.

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 17935993189

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    Ryan's Reviews
    Port Orchard, US
    ★★★★★ 5
    I'd give 10 stars if I could
    Holy cow! This is it! For YEARS I've been looking for a product that would align the bezels on my monitors. I found this product by scrolling through reels and then found the link to Amazon. The price was steep and I was hesitant, but I took the gamble and I'm so glad I did. Installation is slightly confusing, and you really want to know how this works before you adhere it to any surface. I'll break it down for you: Align your monitors flat next to each other. Attach one side with the adhesive, then snap the other side on with the magnet. Peel that adhesive strip and lay it on your second monitor so that they are even. Repeat for the bottom. Twist the U shape up for the left, down for the right. Adjust your angle and then lock them by putting the U shape back to how it was. That's it. The stability on these simple magnets is excellent. I went from a wobbly mount to locked in and only moving when I want it to. I'm so happy this product exists. That's German engineering for you. 💪💪
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    Reviewed in the United States on May 17, 2026
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    Richard G.
    Belleville, US
    ★★★★★ 4
    Works well...but the price!
    I ordered two sets to connect 3 monitors together for a workstation at my job. These are well designed and the magnets are pretty strong. Installation is easy and it holds the alignment well. The only issue is the price. For what it is, the price is quite high. The value proposition would be much higher for those who need to be able to not have them aligned from time to time, such as rotating one around for others to see in an office. But if don't need to do this and just want alignment, there are much cheaper options. If you want to go the cheapest DIY route and it won't be seen, some popsicle sticks with two sided tape works well. You can crack them in the middle to act as a hinge.
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    Reviewed in the United States on February 5, 2026
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    Kayla m
    Fort Morgan, US
    ★★★★★ 5
    Awesome product only thing that worked
    I originally thought the Screen Buddy was overpriced, but after spending hundreds of dollars trying to perfectly align my monitors for sim racing, this is genuinely the only thing that has actually worked properly. Triple monitor alignment is one of the most frustrating parts of building a sim rig, especially with monitor arms constantly moving or sagging. This finally made everything line up the way I wanted. Expensive? Maybe. Worth it after all the headaches? Absolutely. Great job.
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    Reviewed in the United States on May 9, 2026
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    medic4life
    Natrona Heights, US
    ★★★★★ 1
    Doesn't stick
    The adhesive tape kept coming off. I cleaned and followed the installation instructions, but it still kept coming off. Wouldn't recommend.
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    Reviewed in the United States on April 23, 2026
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    Ronald M.
    Phoenix, US
    ★★★★★ 5
    Works Great, Very happy customer
    I’ve tried a few different ways to connect and manage dual monitors, and the Screen Buddy Dual Monitor Connector is easily one of the most straightforward and reliable solutions I’ve used. Setup was quick—no confusing instructions or extra headaches Performance-wise, it’s been rock solid. The connection stays stable and even when I bumped the monitors once, and they disconnected, it was a quick push and they clicked right back together. Build quality feels solid and durable, not flimsy like some cheaper connectors. It’s clearly designed with everyday users in mind, whether you’re working, gaming, or multitasking across multiple apps. Overall, it delivers exactly what it promises: a simple, dependable way to keep your screens connected with no gaps or one being too high or too low. Definitely worth it if you want a clean, hassle-free dual monitor setup.
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    Reviewed in the United States on May 3, 2026

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