> **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

# UART Non-contact Optical Turbidity Sensor for Arduino

**Type:** Product page · **SKU:** SEN0554 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/uart-non-contact-optical-turbidity-sensor-for-arduino.html ([markdown](https://core-electronics.com.au/uart-non-contact-optical-turbidity-sensor-for-arduino.html.md))

This non-contact turbidity sensor, which is based on the optics principle, can detect the level of turbidity in transparent cylinder containers....

## Pricing

- **Price:** $16.70 (inc GST) — $15.18 AUD, exc GST
- **Quantity discounts:** 6+ $14.42 (exc GST) · 12+ $13.82 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 26 and Aug 31.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0554:1` (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/SEN0554:1.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 turbidity sensor detects water quality by measuring the level of turbidity. Based on the optics principle, it is capable of detecting the light transmittance and scattering rate of the liquid in transparent cylinder containers with a diameter of 40–50mm, which will then be output as an analog value within a certain range that reflects the level of liquid turbidity.

The turbidity sensor comes with two infrared probes, which should be oppositely installed on a container. And it detects when the liquid level inside is higher than the two probes. The sensor can measure without coming into contact with liquid, making it less susceptible to corrosion from water or chemicals.

**Installation**

**![Non-contact Optical Turbidity Sensor](https://core-electronics.com.au/attachments/localcontent/Installation_19927183ff1.jpg)**

### Features

- No mechanically moving parts, high reliability
- Small size & low cost
 
### Applications

- Water quality monitoring system
 
### Specification

- Supply Voltage: 5V
- Communication Mode: UART-TTL
- Applicable Cylinder Container Diameter: 40 to 50mm
- Baud Rate: 9600
- Operating Current: less than 10mA
- Response Time: less than 1s
- Operating Temperature: 5 to 60°C
- Storage Temperature: 0 to 65°C
- Service Life: 50000h
 
### Documents

- [Product wiki](https://wiki.dfrobot.com/SKU_SEN0554_Turbidity_Sensor)
 
### Parts List

- Turbidity Sensor × 1
- [Gravity: 4Pin Sensor Adapter](https://www.dfrobot.com/product-1626.html) × 1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0554-1.jpg)