Every turbidity tester costs $ 250+, so how does this sensor is priced $ 15?

This sensor cannot be used as professional equipment due to the low-precision, you can use it in experimental project and laboratory measurements.

Is the dac pcb necessary if i just want to use it in analog mode with my arduino?

Yes, you need to simulate the pattern with A

Does this come with the cable for connecting to arduino?

It comes with a gravity 3-pin female cable, which will be easy to connect to our IO expansion shield, if your arduino is UNO, you still need to use three more male-male jumper wire.

will this work on 3.3V as well?

No, this analog turbidity sensor needs to operate at 5V.

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DFRobot Gravity: Analog Turbidity Sensor for Arduino

DFRobot Gravity: Analog Turbidity Sensor for Arduino

Product ID: 96746306

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Details

Brand
DFRobot
Style
Industrial
Current rating
40 Milliamps
Lower temperature rating
5 Degrees
Maximum supply voltage
5 Volts (DC)

⚡Fast <500ms response

📏High precision <1% accuracy

🔋Low 40mA power draw

Description

💧 Measure the unseen, lead the clean revolution!

INSTANT CLARITY - Detect turbidity changes in under half a second for real-time water quality insights.
POWER SAVVY PERFORMANCE - Operates efficiently at just 40mA, perfect for long-term environmental monitoring projects.
PRECISION YOU CAN TRUST - Achieves less than 1% measurement error, ensuring reliable data for critical water analysis.
VERSATILE APPLICATION READY - Ideal for rivers, wastewater, sediment research, and lab measurements—be the water quality expert.
SEAMLESS ARDUINO INTEGRATION - Gravity interface compatibility means plug-and-play setup with your favorite MCU.

The DFRobot Gravity Analog Turbidity Sensor offers rapid, precise detection of suspended particles in water by measuring light transmittance and scattering. Compatible with Arduino via a Gravity interface, it supports both analog and adjustable digital outputs, making it ideal for environmental monitoring, wastewater treatment, and scientific research. Lightweight and low power, this sensor delivers professional-grade water quality data with under 1% accuracy—just watch out, the probe tip isn’t waterproof.

Specifications

Manufacturer	DFROBOT
Part number	SEN0189
Item Weight	18 g
Package Dimensions	13.89 x 10.11 x 4.39 cm; 18 g
Item model number	SEN0189
Style	Industrial
Item Package Quantity	1
Measurement Accuracy	<1%
Display style	analog
Special Features	Waterproof
Specific uses	Water quality monitoring, wastewater treatment, scientific research
Batteries included?	No
Batteries Required?	No

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