Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	DS18B20 Digital Temperature Sensor
Communication Protocol	RS485 / Modbus RTU
Measurement Range	-55°C to +125°C
Accuracy	±0.5°C (within -10°C to +85°C)
Probe Material	Stainless Steel 304 Waterproof Housing
Cable Length	2 Meters (Customizable)
Power Supply	DC 5V to 24V
Output Signal	Standard RS485 Differential Signal
Protection Rating	IP68 Waterproof and Dustproof
Application	Industrial Automation, HVAC, Aquariums, Soil Monitoring

6 reviews

Anonymous

Mar 28, 2026

Rating: 4/5

Works as described

Accurate temperature readings and simple integration with Home Assistant. The documentation provided by the seller was helpful for configuring the Modbus address.

Anonymous

Mar 24, 2026

Rating: 5/5

Reliable data acquisition

I've deployed ten of these in a greenhouse project. They handle the moisture perfectly, and the data logging via Modbus has been uninterrupted for three months.

Anonymous

Mar 20, 2026

Rating: 4/5

Good value, easy setup

Setup was straightforward using a USB-to-RS485 converter. The readings are consistent with our calibrated thermometer. Only minus one star because the cable could be a bit more flexible.

Anonymous

Mar 20, 2026

Rating: 5/5

Excellent precision

Compared this against a high-end laboratory thermometer, and the deviation was negligible. For the price, you cannot beat the precision and build quality.

Anonymous

Mar 17, 2026

Rating: 5/5

Robust construction

The stainless steel probe feels very durable. I submerged it in a water tank to test the IP68 rating, and it performed without any issues. Great product.

Anonymous

Mar 02, 2026

Rating: 5/5

Perfect for industrial monitoring

This sensor works flawlessly with our PLC system. The Modbus communication is stable, and the waterproof probe holds up well in humid environments. Highly recommended for factory use.

5 FAQ

Q: Does this support multiple sensors on the same bus?

A: Absolutely. RS485 is a multi-drop bus, so you can connect up to 32 devices (or more with repeaters) on the same two-wire line, addressing each sensor individually.

Q: Can this sensor be connected directly to an Arduino?

A: No, this module outputs an RS485 signal. You will need an RS485 to TTL converter (like a MAX485 module) to interface it with an Arduino or similar microcontroller.

Q: Can I use this in saltwater aquariums?

A: While the probe is IP68 waterproof and made of stainless steel, prolonged exposure to highly corrosive saltwater may eventually affect the housing. We recommend regular inspection if used in marine environments.

Q: Is the cable length extendable beyond 2 meters?

A: Yes, the RS485 protocol supports long-distance transmission. You can extend the cable up to 1200 meters using shielded twisted pair cable, provided you maintain proper termination resistors.

Q: What is the default Modbus address and baud rate?

A: The default slave address is 01, and the default baud rate is 9600 bps with 8 data bits, no parity, and 1 stop bit. These can be modified via software commands.

Explore your interests

STC32G12K128 STC8H8K64U Microcontroller Small System Core Board Development Board Emulator

$16.50

Youxin Electronics_STM32H743IIT6 Core Board System Board Learning Board STM32 Development Board

$118.00

Arduino DUE Development Board 32-bit ARM Controller A000062 Italian Official Original Import with Cable

$299.00

Ultrasonic Sensor HC-SR04 Ultrasonic Distance Measuring Module Bracket US015-025-026-100

$3.16

Serial SHT20 Chip Temperature and Humidity Sensor Test, SHT30 Chip Measurement and Monitoring Module by Viter Intelligence

$11.00

High-Speed Yabo Smart Raspberry Pi 4B Motherboard Development Board Accessories RaspberryPi 2G/4G/8G RAM Py

$494.30

Magnetic Circular Counting Chips, Two-Sided Flip Coins for Elementary Math, Kindergarten Early Education, Ten-Frame Matrix, Addition/Subtraction within 10 & 20, Teaching Tools

$11.90

3-Wire/4-Wire Flame Sensor Module, Fire Source Detection with IR Receiver, Flame Detection and Alarm

$1.08

SANSI White Label Class A Glass Graduated Cylinder C18 Micro-Precision Demulsification Cylinder with Scale Measurement Includes Certificate Ground Joint Stopper Hexagonal Bottom Borosilicate Glass Lab Equipment

$3.68

EV2400 Battery Unlock Fuel Gauge Programmer MSP430 HPA500 Evaluation Module Interface Board SMBus

$323.00

Cube Three-View Teaching Aid with Grid - 3D Geometry Observation Tool for Grades 4-5 Math (2cm Cubic Blocks Set)

$15.10

OrangePi Orange Pi Zero3 Zero 3 Development Board Allwinner H618 Orange Pi

$228.00

Digital 38KHz Infrared Receiver Transmitter Head Sensor Module Electronic Building Blocks Robot Infrared Communication Remote Control

$2.29

12V Stable Version Light-Control Switch No-Light Sensing with Extension Cable Photoresistor Plus Relay Module

$49.20

STM32 Smart Car 51 Microcontroller Arduino Obstacle Avoidance Chassis Kit Mecanum Wheel Robot Car

$40.80

Tech Small Production Small Invention DIY Piano Electronic Keyboard Real Playable Science Small Handmade DIY Materials

$33.00

HX711 Pressure Sensor Module Electronic Scale Bracket Weighing DIY Scale Pan Tray Set 5/10/40kg200

$3.28

Transparent 3D Geometric Model Perspective Decomposition Graphic Teaching Aid, Complete Set for Elementary Grades 1-6 Math

$6.80

Thin Film Pressure Sensor Display, USB Rechargeable Flexible Resistive Pressure Digital Display Module, Wide Range Wireless

$20.00

E18-D80NK Infrared Photoelectric Switch Diffuse Reflection Obstacle Avoidance Sensor Module 3-80CM

$12.60

LAN8720 Module Network Module Ethernet Transceiver RMII Interface Development Board Xinwei Electronics

$7.85

STC15W408AS Core Board Minimum System Board 51 Microcontroller Development Board TTSOP20 Learning Board

$18.47

New Version MEGA2560 R3 Development Board, Improved MEGA2560 R3 with Sensor Expansion Board

$13.68

Gradient Visual Illusion Kit: Electric Rotating Assembly Toy for Maker DIY, Paintable Handmade Model

$8.72

51/AVR Microcontroller Core Development Board STC89C52RC/51MCU Experiment Board/ATMEGA32 Learning Board

$37.90

[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set

$15.00

GY-30 302 Digital Light Intensity Illuminance Sensor BH1750FVI Module Light Sensor Ball

$7.41

Foldable Clothes Drying Rack Floor Standing Home Balcony Bedroom Hanging Clothes Quilt Drying Artifact Outdoor Cooling Rod Indoor Drying Rack

$47.10

Metal Detector Module Non-Contact Metal Induction Sensor Detection Module Metal Detector

$8.70

RV1103 Miniature Linux Development Board: RISC-V Vision and AI with Ethernet Port

$53.10

For Arduino Development Board R3 Mainboard Microcontroller Module Kit Programming Learning Board Sensor Suite

$78.00

Xuefen Geometry Stamping and Tracing Set for Grades 1-2, 3D and 2D Ink Pads, Math Learning Tools, Cube and Cuboid Models

$4.51

Rubber Tire Toy 4WD Smart Car Wheels Car Model Robot Accessories (Suitable for 2mm Axle)

$0.50

E18-D80NK Infrared Obstacle Avoidance Sensor Proximity Switch Smart Robot Car 10-80cm

$6.30

Digital 38KHz Infrared Receiver/Transmitter Head Sensor Module for Electronic Building Blocks Robots, Infrared Communication Remote Control

$2.80

51 MCU Minimum System STC89C52 DIP40 Through-Hole Smart Car Main Control Board Learning Experiment

$19.80

Outdoor Adventure Kids' Insect Observation Box with Magnifying Glass, Boys & Girls Toy for Exploration, Butterfly Catching and Fish Scooping Tools

$7.80

MPU-9255 9-Axis Attitude 3-Axis Electronic Compass Accelerometer Gyroscope Magnetic Field Sensor Module

$13.42

Freeze-Dried Chicken Treats for Dogs: Nutritious Weight-Gain Breast Meat Chunks for Puppies – Teeth Cleaning, Grain Mixing, Universal Use

$3.90

Soil Moisture Sensor Probe Soil Moisture Meter Detection Module Sensor Separate Probe

$2.39