DS18B20 waterproof temperature sensor

Waterproof DS18B20 Digital Temperature Sensor
Waterproof DS18B20 Digital Temperature Sensor


This is a temperature sensor based on DS18B20 chip, with waterproof probe and long wire shape, which is very suitable for immersion temperature detection or DS18B20 provides 9 to 12 bits (configurable) to obtain temperature reading through 1-wire interface, so only one wire (and ground wire) is required to connect from the central microprocessor.

The original included three wires, which we adjusted to a 3-pin connector, so you can simply use it with other adapters. (no welding required)


The temperature sensor module is a metal tube thermometer with DS18B20 detector. It has strong anti-interference ability and high precision, and is covered by waterproof rubber hose. It can measure the temperature in the range of – 55 ℃ ~ + 125 ℃. It is possible to connect to the RJ25 adapter module and then to the make block Orion temperature measurement.

Please note that when the sensor temperature is up to 125 ° C, the sheath PVC is easily damaged, so we recommend keeping it below 100 ° C.



Using 1-wire interface – only one digital pin is required for communication

Stainless steel pipe, diameter 6 mm, length 35 mm

Arduino library, easy to program

Size: probe diameter is 6 mm, length is about 50 mm. The overall length (including wires) is 0.5m


Power supply: 3.0V to 5.5V

Wide temperature range: – 55 ° C to + 125 ° C

High accuracy: ± 0.5 ° C (- 10 ° C to + 85 ° C)

Technical Specifications

●Working voltage: 5V DC

●Sensor type: DS18B20

●Temperature range: – 55℃ ~ +125℃

●Control mode: single bus port

●Size: 500 x 6 x 6 mm

Functional features

●9-12 bit a / D conversion accuracy

●High precision: ± 0.5 ℃ (- 10 ℃ ~ + 85 ℃)

●Probe diameter: 6 mm, length: about 50 mm, total length: 1 m (including wire)

●Short temperature conversion time, up to 750ms

●Support multi-point networking

●Perfect waterproof performance

●Support block GUI programming, suitable for users of all ages

Principle analysis

The temperature sensor module has the main component DS18B20, with miniaturization, low power consumption, high performance, strong anti-interference ability and easy matching with microprocessor. DS18B20 adopts a unique single bus port mode, which is only connected with microprocessor through bus to realize two-way communication between microprocessor and DS18B20.

The module supports multi-point networking function, so multiple DS18B20 can be connected in parallel on only three lines for multipoint temperature measurement, and the measurement results are sent in 9-12 bit serial digital mode. When communicating with a single-chip computer, you can set the resolution by configuring registers.