> **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

# Non-contact Flexible Liquid Level Sensor

**Type:** Product page · **SKU:** SEN0508 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/non-contact-flexible-liquid-level-sensor.html ([markdown](https://core-electronics.com.au/non-contact-flexible-liquid-level-sensor.html.md))

This non-contact capacitive liquid level sensor uses flexible substrate with light and thin design. With temperature-resistant and waterproof 3M adhesive...

## Pricing

- **Price:** $16.35 (inc GST) — $14.86 AUD, exc GST
- **Quantity discounts:** 6+ $14.12 (exc GST) · 12+ $13.53 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 200 more in 8–12 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0508:1` (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/SEN0508:1.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 non-contact capacitive liquid level sensor uses a flexible substrate with a light and thin design. With temperature-resistant and waterproof 3M adhesive tape on the back, it can be easily attached to surfaces of any kind of non-conductive container whose thickness is less than 5m.

The sensor outputs digital high/low level (low when liquid detected) and adopts 3-pin DuPont connector, which can be widely used in water tank detection, beverage machine, water pipe level detection, scientific experiment test tube level detection and other scenarios.

**Working Principle**

The intelligent liquid level sensor uses the sensing capacitance of water to detect the presence of liquid. When there is no liquid approaching the sensor, the sensor has a certain static capacitance due to the distributed capacitance. When the liquid level slowly rises close to the inductor, the parasitic capacitance of the liquid will be coupled to the static capacitor, causing the final capacitance of the inductor to become larger. The changed capacitance signal is then input to the control IC for signal conversion, which will change. The capacitance is converted into the amount of change of an electrical signal, and then a certain algorithm detects and judges the degree of the change. When the amount of change exceeds a certain threshold, the liquid level is considered to reach the sensing point.

**![](https://core-electronics.com.au/media/wysiwyg/product_images/1_1.jpg)**

**![](https://core-electronics.com.au/media/wysiwyg/product_images/SEN0508.png)**

### Features

- Light and thin design
- Can be attached to surfaces of non-conductive containers
 
### Specification

- Working Voltage: 2.5~5.5VDC
- Working Current: 5V290uA 3V235uA
- Output: low (liquid detected), high level(no liquid detected)
- Detection Distance: 5mm
- Hysteresis: ±0.25%FS
- Protection Level: IP62
- Working Temperature: -30~85°C
- Weight: 2g
 
### Documents

- [Product wiki](https://wiki.dfrobot.com/Non_contact_Flexible_Liquid_Level_Sensor_SKU_SEN0508)
 
### Parts List

- Flexible Non-contact Liquid Level Sensor x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_12227.jpg)