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Octopus Water-proof Temperature Sensor(EF04095)


This sensor is a tempeterature detector used to test the liquid temperature based on 18b20.

ELECFREAKS Octopus Waterproof Temperature Sensor (DS18B20)


Standard 3-pin GVS ports is easy to plug. 3V working voltage can drive the micro:bit. Water-proof design makes it possible to use in the liquid.


SKU:EF04095 Working Voltage:DC 3.0V Power Supply:3v-5v Connector Type:Analog Length of water-proof detector:1m Pins Definition:1-Signal 2-VCC 3-GND Response:Quick to response and high sensiivity Circuit:Simple drive circuit Stability:Stable and durable

Outlook and Dimensions

Quick to Start

Connection Diagram

Connect to the P1 port of the extension board.

Add Package

Click "Advanced" in MakeCode to check more choices.

Click "Extensions", and search “" in the dialogue box to download the codebase of 18b20.

Programme as the Picture Shows



You can also download it directly:


The current temperature value is showing on the micro:bit.

Relevant Cases

Technique Files