Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	DS18B20 Digital Temperature Sensor
Probe Material	304 Stainless Steel
Cable Length	2 Meters (6.5 ft)
Waterproof Rating	IP68 Encapsulated
Temperature Range	-55°C to +125°C
Accuracy	±0.5°C (from -10°C to +85°C)
Resolution	9 to 12-bit configurable
Interface Protocol	1-Wire Digital
Supply Voltage	3.0V to 5.5V DC
Application	Aquariums, Hydroponics, HVAC, Food Processing

6 reviews

Anonymous

Mar 29, 2026

Rating: 4/5

Good value for money

Solid build quality for the price point. It responds quickly to temperature changes. Just make sure you use a pull-up resistor on your data line, or it won't communicate.

Anonymous

Mar 22, 2026

Rating: 5/5

Survived winter outdoors

Left this outside in a compost bin monitor all winter. Despite freezing temperatures and snow, it kept reporting data without any issues. Very impressed with the encapsulation.

Anonymous

Mar 21, 2026

Rating: 5/5

Easy to integrate

Plug and play with ESP32 boards. The 1-wire protocol makes wiring simple even for beginners. Accuracy seems spot on for home automation tasks.

Anonymous

Mar 11, 2026

Rating: 5/5

Perfect for my hydroponic setup

This probe is exactly what I needed. The stainless steel casing feels very durable, and the waterproof seal holds up perfectly in my nutrient reservoir. Readings are consistent with my calibrated thermometer.

Anonymous

Mar 08, 2026

Rating: 5/5

Reliable and accurate

I've been using these sensors in multiple saltwater tanks for six months now. No corrosion on the steel and no water ingress. Highly recommended for marine environments.

Anonymous

Mar 04, 2026

Rating: 4/5

Great sensor, cable could be longer

Works flawlessly with my Arduino project for monitoring fermentation temps. The only reason for 4 stars is that I wish the cable was 3 meters instead of 2, but otherwise, it's a solid product.

5 FAQ

Q: Does it come with a connector or just raw wires?

A: This unit comes with three raw, tinned wires (Red for VCC, Black/Yellow for GND, and Blue/White for Data) to allow for custom integration. Connectors are not included but can be easily soldered on.

Q: What is the diameter of the stainless steel probe?

A: The outer diameter of the stainless steel encapsulated tip is approximately 6mm (0.24 inches), making it suitable for insertion into standard fittings and small containers.

Q: Can this measure liquid nitrogen temperatures?

A: No, this sensor has an operating range of -55°C to +125°C. Liquid nitrogen is approximately -196°C, which is far below the minimum operating limit of this device and would likely damage it.

Q: How long is the warranty period?

A: We provide a standard 12-month warranty against manufacturing defects. This does not cover damage caused by exceeding voltage limits, physical crushing of the cable, or modification of the sensor.

Q: Is this compatible with Raspberry Pi?

A: Yes, this DS18B20 sensor is fully compatible with Raspberry Pi. You will need to enable the 1-Wire interface in the Pi's configuration settings and connect a 4.7k ohm pull-up resistor between the data and power lines.

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