# 18B20 Temerature Sensor (Arduino Compatible)

**Type:** Product page · **SKU:** DFR0024 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/18b20-temerature-sensor-arduino-compatible.html ([markdown](https://core-electronics.com.au/18b20-temerature-sensor-arduino-compatible.html.md))

DS18B20 is a digital temperature sensor which is from DALLAS U.S. It can be used to quantify the environmental temperature testing.

## Pricing

- **Price:** $9.45 (inc GST) — $8.59 AUD, exc GST
- **Quantity discounts:** 6+ $8.16 (exc GST) · 12+ $7.82 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 01 and Sep 07.

## Description

### Introduction

DS18B20 is a digital temperature sensor which is from DALLAS U.S. It can be used to quantify the environmental temperature testing.

The temperature range -55 ~ +125°C, the inherent temperature resolution of 0.5°C, support multi-point networking mesh. Three DS18B20 can deloyed on three lines, to achieve multi-point temperature measurement. It has a 9-12 bit serial output.

This sensor can be directly plug and play with our [IO expansion shield](https://core-electronics.com.au/io-expansion-shield-for-arduino-v7.html).

### Features

- Digital temperature conversion and output
- Advanced single-bus data communication
- Maximum 12-bit resolution, accuracy up to ±0.5 degrees Celsius
- Parasitic mode available
- Temperature detection range: -55°C ~ +125°C (-67°F ~ +257°F)
- Built-in EEPROM and temperature limit

### Specification

- Voltage: +5V
- Interface:Digital
- Pin definition: 1--Output 2-Power 3---GND
- Weight: 5g

### Documents

- [Wiki Doc](https://www.dfrobot.com/wiki/index.php/Gravity:_DS18B20_Temperature_Sensor_(Arduino_Compatible)_V2_SKU:_DFR0024)
- [Schematic](https://core-electronics.com.au/attachments/localcontent/18B20TemperatureSensorSCH_332884f31bf.pdf)
- [DS18B20 Datasheet](https://core-electronics.com.au/attachments/localcontent/DFR0024_18B20_Datasheet_299486ad40e.pdf)
- [One Wire library](https://core-electronics.com.au/attachments/localcontent/OneWire_15704a6ff8a.zip) for 18b20
- [Sample code](https://core-electronics.com.au/attachments/localcontent/DS18B20forArduino1_86114776cf.zip)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/_/d/_dsc0844.jpg)