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# Waterproof SMD DS18B20 Digital Temperature Sensor

**Type:** Product page · **SKU:** SEN0511 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/waterproof-smd-ds18b20-digital-temperature-sensor.html ([markdown](https://core-electronics.com.au/waterproof-smd-ds18b20-digital-temperature-sensor.html.md))

This waterproof SMD DS18B20 temperature sensor provides 9-bits to 12-bit (configurable) temperature measurement and communicates over a 1-Wire bus that by...

## Pricing

- **Price:** $11.90 (inc GST) — $10.82 AUD, exc GST
- **Quantity discounts:** 6+ $10.27 (exc GST) · 12+ $9.85 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 14 today, and up to 400 more in 8–12 days.

## How to buy

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## Description

This waterproof SMD DS18B20 temperature sensor provides 9-bits to 12-bit (configurable) temperature measurement and communicates over a 1-Wire bus that by definition requires only one data line for communication with a central microprocessor(Arduino). It is suitable for measuring surface temperature and offers steady performance even in wet conditions or at a far distance. Besides, the sensor comes with silicon lead wire, more temperature resistant than normal PVC materials. And they are digital, which means you don’t get any signal degradation even over long distances! Its operating voltage is 3 to 5.5 volts.

Each DS18B20 has a unique 64bit serial code, which allows multiple DS18B20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18B20s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems inside buildings, equipment, or machinery, and process monitoring and control systems.

You can directly connect this sensor to an IO expansion board with [DFRobot's adapter](https://core-electronics.com.au/terminal-sensor-adapter-v2-0.html), no soldering required.

**Sensor Connection**

 **Features**

- Steady performance
- Digital signal
 
 **Applications**

- HVAC environmental controls
- Temperature monitoring systems
- Process monitoring and control systems
 
 **Specification**

- Working Voltage: 3~5.5V
- Measuring Temperature Range: -10~+85°C
- Operating Temperature Range: -55~+125°C (-67~257°F)
- Wire Temperature Resistance: -55~+125°C
- Resolution: 9-12 bits
- Single-wire Interface: only one digital interface is needed for communication
- A 64-bit ID embedded in the chip
- Parallel sensors can share one interface
- Temperature limit alarm system
- Query time: =750ms
- Wiring Instructions: red -VCC, black -GND, blue -DATA
- Wire length from the base of the sensor: 1000mm
- Sensor End Dimensions: 20mm x 4.5mm x 7mm
 
 **Documents**

- [Document ](https://core-electronics.com.au/attachments/uploads/DS18B20.pdf)
- [Sample code for Arduino 1.0 ](https://core-electronics.com.au/attachments/localcontent/DS18B20forArduino1_86114776cf.zip)
- [Sample code for IDE under 1.0](https://core-electronics.com.au/attachments/localcontent/DS18B20sketchforArduinoIDEunder1_848784f8e6.zip)
- One Wire library
- [How to use OneWire temperature sensors with a Raspberry Pi](https://core-electronics.com.au/guides/raspberry-pi/temperature-sensing-with-raspberry_pi/)
 
 **Parts List**

- Waterproof SMD DS18B20 Digital Temperature Sensor x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_12562.jpg)