> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Waterproof DS18B20 Digital temperature sensor

**Type:** Product page · **SKU:** DFR0198 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/waterproof-ds18b20-digital-temperature-sensor.html ([markdown](https://core-electronics.com.au/waterproof-ds18b20-digital-temperature-sensor.html.md))

## Retired product

This product is retired and no longer available for purchase. Replaced by: SEN-11050.

**Replacement:** https://core-electronics.com.au/catalog/product/view/sku/SEN-11050

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

Take temperature readings from a distance, or underwater, using this Waterproof DS18B20 Digital Temperature Sensor. It's got a 90cm (0.9m) cable with a stainless steel, PVC coated probe at the end. You'll be able to use it with any 3V-5V system, and take temperature readings with an accuracy of 9-12 Bits (configurable in code). The best part is that it's digital, meaning you won't suffer any signal degradation over the longer distance.

- **Waterproof** - Take the temperatures of liquids/moist environments with the stainless steel probe. It's shrouded in PVC plastic too, meaning it will hold it's own in temperatures up to 100 degrees Celsius.
- **Temperature** - Usable from -55 degrees Celsius to 125 degrees Celsius. Accuracy of ~0.5 degrees.
- **Digital** - The digital interface used to relay the readings guarantees minimal signal degradation over the longer distances (~90cm for this standard cable)
- **1-wire interface** - You can have multiple DS18B20s connected to the same central micro-controller pin as each device has a unique identifier hard-coded in.
- **Long range** - 1.5 meters of cable by default, but you can make it longer if needed!
- **Maker friendly** - The DS18B20 chip is able to be powered with 3v - 5.5v which is perfect for maker platforms (Arduino, Raspberry Pi, etc)
 
### Hook-up guide

This sensor is simple, you've got 3 wires (Power, Ground and Data). You simply need to connect the data pin to an input pin on your micro-controller (Arduino, etc) and the power and ground to power and ground!

**You'll also need to connect a resistor between power and signal wires, as shown in the circuit diagram on [the Sensor's wiki page](https://www.dfrobot.com/wiki/index.php/Waterproof_DS18B20_Digital_Temperature_Sensor_(SKU:DFR0198)).**

You can simply use the One-wire library for any Arduino projects (See the examples below for more in-depth information). We've even made our own tutorial on [using this sensor with a Raspberry Pi!](https://core-electronics.com.au/guides/raspberry-pi/temperature-sensing-with-raspberry_pi/) As always, we're full time maker's with experience using this gear and we're here to help. Make a post in [our forum](https://forum.core-electronics.com.au/) to get more information on anything maker related.

### Technical Specifications

- Compatible with 3.0V to 5.5V systems (Arduino, Raspberry Pi, micro:bit, etc)
- Within 0.5 degrees Celsius accuracy
- Recommended usable temperature range: -55 to 125 degrees Celsius
- Select-able 9-12 bit resolution (Factory Default at 12-bit)
- 1 Wire Interface
- Unique 64 bit ID for each sensor
- Query time is less than 750ms
- Stainless steel tube 6mm diameter by 35mm long
- Cable diameter: 4mm
- Cable Length: 90cm

## Guides for this product

- [Getting Hands-on with Sensors](https://core-electronics.com.au/guides/sensors/getting-hands-on-with-sensors/)
- [Temperature Sensing with Particle](https://core-electronics.com.au/guides/particle/temperature-sensing-with-particle/)

## Videos for this product

- [Getting Hands On With Some Popular Sensors](https://core-electronics.com.au/videos/getting-hands-on-with-some-popular-sensors)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0198.jpg)