QT18B20 -digital temperature sensor compatible with DS18B20 - waterproof - 1m

Weight: Help
29 g

Digital temperature sensor compatible with DS18B20 with OneWire interface

On stock: : n/a

PLN 7,90
PLN 6,42 w/o VAT
EUR 1,80
EUR 1,46 w/o VAT
How many Discount Price per piece
with VAT, in PLN
1 7,90
5+ 8,00 % 7,27
10+ 12,00 % 6,95
25+ 16,00 % 6,63
Quantity discounts does not sum with other discounts

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QT18B20 a good replacement for DS18B20

1m cable with a waterproof probe with 7Q Technology QT18B20 temperature sensor (compatible with DS18B20) embedded inside a metal shell.


  • Sensor chip
    • Manufacturer: 7Q Technology
    • Model: QT18B20
    • Protocol: OneWire compatible with DS18B20
    • Supply voltage: from 3.0V to 5.5V
    • Measurement range: -55°C to 125°C
    • Measurement accuracy: ± 0.5°C (in the range of -10°C to + 85°C)
    • Resolution: 9 to 12 bits
  • Cable length: 1m
  • Shell diameter: 6mm
  • Works with standard and parasitic power
  • Leads:
    • Black - GND
    • Red - Vcc
    • Yellow - signal

We can check the address for you!

If you need a QT18B20 / DS18B20 sensor with a known address - we can check it for you. All you need to do is add the address checking service to your shopping cart, and you will receive the sensor with a label attached.

Compatible chips, clones and fakes

The market is full of bad DS18B20 clones. Among the counterfeit sensors and poor-quality replacements sold as originals, you can easily find those that not only do not meet the specifications, but also do not work in parasitic mode. For this reason, the sensors we sell are tested with a script written by Chris Petrich. The script allows you to check and classify the sensors accurately.

Low price is very important factor. Our customers often look for the cheapest DS18B20 sensors. To be fair to customers, we decided that introducing the QT18B20 to the offer would be a good compromise between quality and price.


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