> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Grow Moisture Sensors (pack of 3)

**Type:** Product page · **SKU:** PIM520 · **Brand:** [Pimoroni](https://core-electronics.com.au/brands/pimoroni-australia) · **GTIN:** 769894016336
**Page:** https://core-electronics.com.au/grow-moisture-sensors-pack-of-3-1.html ([markdown](https://core-electronics.com.au/grow-moisture-sensors-pack-of-3-1.html.md))

A trio of Grow soil moisture sensors, for use with Grow HAT Mini or other devices.

## Pricing

- **Price:** $25.60 (inc GST) — $23.27 AUD, exc GST
- **Quantity discounts:** 10+ $22.35 (exc GST) · 25+ $21.65 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 01 and Sep 07.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=PIM520:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/PIM520:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

These **capacitive moisture sensors** work using Pulse-Frequency Modulation (there's more info on that in our [Grow tutorial](https://learn.pimoroni.com/tutorial/hel/assembling-grow)). They're a lot less vulnerable to corrosion over time than old school resistive sensors, as there are no exposed electrodes. There's a handy indicator line to show you how far they can be pushed into the soil, and they even have a little area so you can label them with plant names (we think 'Pete' is a great plant name).

It's possible to use Grow moisture sensors on their own with non-Raspberry Pi devices (like Arduino), as long as they're capable of monitoring pulses on an IO pin in the range of ~2Hz up to ~30Hz accurately.

**Moisture sensor specifications:**- Capacitive moisture sensors with [Pulse-Frequency Modulation](https://en.wikipedia.org/wiki/Pulse-frequency_modulation) output.
- Male JST SH 3P connectors (if you need compatible cables, we sell them separately [here](https://core-electronics.com.au/jst-sh-3-pin-connector-for-grow-moisture-sensor-pack-of-3-1.html))
- [Pinout](https://core-electronics.com.au/attachments/localcontent/moisturesensorpinout_44612e62196.png)
- Dimensions: 99mm x 10mm x 5mm (including connector)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/P/I/PIM520-1.jpg)