SKU: 8043206457
indoor plant sensor

indoor plant sensor PLT-1 Ultimate Plant Sensor

Sale price$24.57 Regular price$27.30
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

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Description

indoor plant sensor 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: 8043206457

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    ★★★★★ 5
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    AMAZING FOR TOUGH CHEWERS!!! I did NOT buy this toy with the intentions of it lasting longer than the usual couple of hours for chew toys and tug toys for my three pits (I really only bought it because my puppy likes to chomp when I scratch her booty and corn shaped toys make it look like she is “corn cobbing” the kernels right off). I don’t know if it’s the kernel design or what….but my tough chewers have not been able to make a dent!! And that is NOT from lack of trying!! They usually get through even the toughest toys within a DAY at the most of me giving them to them. I usually buy a few, so they can have at least a few days worth of fun. With this toy, they have tried even harder! It’s almost like it is not personal…because they can’t get through this one! Haha The string part didn’t stand a chance. In fact, I cut that off within an hour. It was short and hard to hold on to. The threads came apart pretty quickly. I cut that part off. But the corn part?!?! I wish ALL toys were made out of that texture!! I am gobsmacked that the cob is still intact, with each and every kernel still in place!! If you have a tough chewer…give this one a shot! I am ordering two more right now!! So they can each have their own ear!
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    Reviewed in the United States on March 24, 2026
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    Paige Barzycki
    Houston, US
    ★★★★★ 3
    Cute but not Durable
    Color: Squeaky Corn Dog Toys
    It’s a very cute dog toy but for it being labeled for “aggressive chewers” I thought it would last longer than 3 days here.. I now have small chunks of “corn” all over my house and had to throw this toy away.
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    Reviewed in the United States on December 28, 2025
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    Kelly
    Grantham, US
    ★★★★★ 5
    My dog loves these
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    I have a healer and he loves his corn. He does go through them every couple months but he’s a very aggressive chewer. He mostly loves to play catch with them. I have ordered many of these.
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    Reviewed in the United States on May 25, 2026
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    cbeach710
    Massapequa, US
    ★★★★★ 5
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    I bought this for my golden puppy during peak teething time, and she showed no interest for 2 more months before becoming obsessed with it. It squeaks pretty loud & she appears to enjoy that. She also carries it while running by the rope end and flails it around to play lol. Worth it.
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    Bennett Totleben
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    Great for frenchies
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    Really nice toy, my dog loved it until it broke, really good for frenchies! It’s a great cheap toy but the knots get chewed through.
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