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We have ✅ 3 available of the EF-EF04094 in our Sydney warehouse. An extra 100 units will be available shortly.

Express post delivery (2-5 business days)

Octopus Water level Sensor is the water level electric brick in our Octopus series, the basic design is from the Octopus electric bricks and the setting of its outlook, the PCB fixing hole and the connectors are the same.

Octopus Water level electric brick is a simple, easy-to-use, high performance with reasonable prices sensor, the water level is detected by the exposed parallel wires and the water volume.

It can convert the water volume to analog signal easily and the output value can be recognized by micro:bit and thus make the water level alarm happen.

Notice: The components above the MAX water level are not waterproof, please do not put them in the water.


Simple, easy to use with a small size.

Support micro:bit in 3V.

Easy and convenient for connection.


Name    Octopus Water level sensor

SKU    EF04094

Working Voltage    DC 3~5.5V

Connection Mode    G-GND,V-VCC,S-signal pin

Size    59.15 x 19mm

Net Weight    5.5g

Dimensions and Outlook

Quick to Start

Hardware Connection

Connect the module with the wire(with buckle) to the PI pins on the Octopus:bit, insert the micro:bit to the Octopus:bit.

Software Programming

Programme in the makecode and analog read P1 to get the value of water level that would be showing on the micro:bit. Links


The value of the soil moisture is showing on the micro:bit.

The Octopus Water level sensor appears in the following collections:

SKU EF-EF04094