2 Pack DS18B20 (Waterproof Temperature Probe) – 1‑Wire Digital Temperature Sensor

DS18B20 (Waterproof Temperature Probe) – 1‑Wire Digital Temperature Sensor

Waterproof DS18B20 digital temperature probe for precise temperature measurement in air or liquids, ideal for ESP32, Arduino, and Raspberry Pi data‑logging, smart home, and IoT projects.

DS18B20 (Waterproof Temperature Probe) Compatibility 

Works with Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and most 3.3V–5V microcontroller platforms using the 1‑Wire protocol on a single digital pin.

Key Features 

Stainless steel, epoxy‑sealed probe for use in wet or humid environments.
Digital 1‑Wire interface allows multiple sensors on a single data pin, each with a unique 64‑bit ID.

High accuracy over typical ranges, with up to 12‑bit resolution for fine‑grained readings.

Long, flexible cable for remote measurements in tanks, pipes, outdoor enclosures, or hard‑to‑reach spots.

Clearly color‑coded leads for VCC, GND, and data to simplify wiring to your boards.

Technical Specs

Sensor type: DS18B20 digital thermometer.

Operating voltage: 3.0V – 5.5V DC.

Temperature range: typically −55°C to +125°C (−67°F to +257°F).

Accuracy: about ±0.5°C over −10°C to +85°C (typical).

Resolution: configurable from 9‑ to 12‑bit.

Cable: PVC‑jacketed lead, commonly around 1 m length, with stainless steel probe housing.

Ideal Uses

Temperature logging in aquariums, hydroponics, and water tanks.

Outdoor and indoor environment monitoring for smart‑home systems.

Refrigerator, freezer, and cold‑storage monitoring.

Embedded and IoT projects that need multiple temperature points on a single bus.

What’s Included

1 × DS18B20 (Waterproof Temperature Probe).

Safety Note

Designed for fresh water and general‑purpose non‑corrosive liquids; not intended for long‑term immersion in salt water or aggressive chemicals unless otherwise specified by your supplier.