DS18B20 Waterproof Temperature Sensor Probe Stainless Steel 1-Wire for Arduino Aquarium Soil

$7.96 USD

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DS18B20 Waterproof Temperature Sensor Probe — Stainless Steel, 1-Wire

A reliable, waterproof temperature sensing solution for liquid, soil, and remote measurement applications. This DS18B20 stainless steel probe delivers accurate digital temperature readings via the 1-Wire protocol — requiring only a single microcontroller pin. The sealed stainless steel housing protects the sensor from moisture, corrosion, and physical damage, making it suitable for permanent installation in aquariums, pipes, soil, and outdoor environments.

Specifications

Sensor IC	DS18B20 / DS1820 (Dallas/Maxim)
Communication	1-Wire digital interface
Supply Voltage	3.0V – 5.5V
Temperature Range	-55°C to +125°C
Accuracy	±0.5°C (-10°C to +85°C)
Probe Housing	Stainless steel (waterproof)
Output	Digital (1-Wire)
Compatibility	Arduino, ESP8266, ESP32, Raspberry Pi, STM32

Wire Color Code

Color	Function	Connect To
Red	VDD (Power)	3.3V or 5V
Black	GND	Arduino GND
Yellow	DQ (1-Wire Data)	Digital pin + 4.7kΩ pull-up to VCC

Why Choose This Sensor?

✅ Waterproof stainless steel probe — safe for liquid immersion and outdoor use
✅ Wide temperature range -55°C to +125°C — covers freezing to boiling point applications
✅ Digital 1-Wire output — noise-immune signal, ideal for long cable runs
✅ Single-pin interface — saves valuable MCU I/O pins
✅ Multi-sensor support — multiple DS18B20 probes on one digital pin via unique 64-bit addressing
✅ 3.3V and 5V compatible — universal microcontroller compatibility
✅ Arduino library support — OneWire + DallasTemperature libraries make integration straightforward

Common Applications

Aquarium and fish tank water temperature monitoring
Soil and hydroponic growing medium temperature sensing
Water pipe and boiler temperature measurement
Outdoor weather station temperature probes
Sous vide and food temperature control
Swimming pool and spa temperature monitoring
Arduino and ESP8266/ESP32 IoT temperature nodes

Arduino Quick-Start

Connect Red to 5V, Black to GND, Yellow to digital pin 4.
Add a 4.7kΩ pull-up resistor between Yellow (data) and Red (VCC).
Install OneWire and DallasTemperature libraries via Arduino IDE Library Manager.
Upload sketch and read temperature via Serial Monitor at 9600 baud.