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JungleSIM for plants

Know when your plants need water.

Put a small sensor in the pot. The app shows how moist the soil is, notices every watering by itself and tells you when a plant is getting dry. No hub and no base station: the sensor uses your home Wi-Fi.

Get the M1S sensorHow it works

€26.10 per plant · Pre-order, ships December 2026

PlantsLiving room · 3 plants
  • MonsteraWatered 6 days ago
    18 %Water now
  • CalatheaWatered 3 days ago
    41 %Water in ~2 days
  • PothosWatered today
    57 %OK

How it works

  1. Into the potPush the probe into the soil up to the line on the blade. One M1S per plant.
  2. Onto your Wi-FiThe JungleSIM app sets the sensor up over Bluetooth in about a minute. Any 2.4 GHz home Wi-Fi works.
  3. Water when it says soThe app lists your plants by who needs water first and sends you a message when one is getting dry.

Made for the windowsill

Watering noticed by itself
When the soil gets wetter, the app knows you watered. You see when each plant last had water and how many days it usually lasts.
Knows your plant
Pick the type and the app sets the watering line: succulents and cacti dry, most house plants in the middle, ferns and tropicals moist. You can change it.
A message when it is dry
“Monstera needs water” on your phone, and on the home screen widget the plants that are due.
Months on one charge
The sensor sends every few hours and sleeps in between, so the battery lasts for months. It charges over USB-C.
No metal in the soil
It measures capacitively through its blade, so nothing corrodes in wet soil.
Free app
Plant mode is part of the free JungleSIM app. Android now, iOS coming.

Want JungleSIM to water for you?

To see the readings, the sensor alone is enough. As soon as JungleSIM should switch something by them, such as a watering pump, a grow light or any other device, you need an S1M screen module or a C1H control hub.

Discover JungleSIM

At a glance

Sensor
M1S soil moisture sensor, one per plant
Connection
2.4 GHz home Wi-Fi, no hub needed
Setup
In the JungleSIM app, over Bluetooth
Reports
Every few hours, at once when the soil gets too dry
Battery
Rechargeable over USB-C, lasts months
Size
57.2 x 41.2 x 21.2 mm, 90.6 mm tall with the probe
App
Android, iOS coming

Keep a terrarium too? The same sensor works there, and with an S1M or C1H JungleSIM runs the whole climate.

Get the M1S sensor