> **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

# Gravity: Throw-in Type Liquid Level Transmitter

**Type:** Product page · **SKU:** KIT0139 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-throw-in-type-liquid-level-transmitter.html ([markdown](https://core-electronics.com.au/gravity-throw-in-type-liquid-level-transmitter.html.md))

This throw-in type liquid level transmitter adopts high-performance pressure sensing chip, with advanced circuit processing and temperature compensation technology...

## Pricing

- **Price:** $87.50 (inc GST) — $79.55 AUD, exc GST
- **Quantity discounts:** 6+ $75.56 (exc GST) · 12+ $72.38 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 5 today, and up to 700 more in 8–12 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=KIT0139:1` (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/KIT0139:1.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

This "throw-in" type liquid sensor adopts a high-performance pressure sensor, complete with temperature compensation. You could use this pressure data to determine the depth of liquid above the sensor, and therefore the volume of liquid in a container

The shell of the sensor is made of stainless steel, a naturally anti-corrosive and easy-to-clean material. It can be directly placed in liquids like water, oil or even something thicker!

Since this sensor outputs a fairly obscure current output (yep, not voltage), DFRobot have bundled in their [analog current to voltage converter board](https://core-electronics.com.au/gravity-analog-current-to-voltage-converter-for-4-20ma-application.html) to make this sensor usable with Arduinos or similar microcontrollers

### Specifications

- Cable length: 5m
- Measurement range: 0-5m
- Accuracy: 0.5%
- Output signal: 4-20mA
- Operating voltage: 12-36V
- Operating temperature: -20°C - 70°C
- Material: 316L stainless steel
- Ingress protection: IP68
 
### Usage Notes:

- Make sure you connect the power supply exactly as shown in the diagram on the Product Wiki
- The workings of this sensor are fairly fragile. Make sure you don't disassemble or drop the device, or puncture its diaphragm with any sharp objects
- This sensor requires a pre-heating period of about 30 minutes with the power supply connected before accurate readings can be made
 
### Documents and Resources

- [Product Wiki](https://wiki.dfrobot.com/Throw-in_Type_Liquid_Level_Transmitter_SKU_KIT0139)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/k/i/kit0139-family.jpg)