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Waterproof DS18B20 temperature probe with 2m cable and Grove connector

Seeed Studio

Seeed Studio DS18B20 One Wire Temperature Sensor

SKU CH-JNXX-AVMNN

Waterproof DS18B20 probe with pre-assembled Grove connector measures -55°C to +125°C at ±0.5% accuracy

  • TypeSensors
  • ±0.5 % accuracy from –10 °C to +85 °C
  • Operates in extreme conditions from –55 °C to +125 °C
  • Built-in alarm flags temperatures outside set limits
  • Waterproof probe enables immersive temperature detection
  • Grove socket with pre‑assembled resistor gives plug‑and‑play convenience

DS18B20 One-Wire temperature sensor

The DS18B20 sensor delivers configurable 9 to 12-bit readings over a single data line with ground. It draws operating power from the bus itself, removing the need for an external supply. A pre-fitted pull-up resistor inside the Grove connector makes it ready for immediate use with compatible controllers. Builders wanting analog output or multi-drop SPI will need a different device.

Waterproof probe with Grove connector

The stainless probe survives immersion from -55°C to +125°C, while the cable sheath is rated only to 70°C for prolonged exposure. Measurement accuracy is ±0.5% between -10°C and +85°C. An alarm search command flags any device that exceeds programmed limits. Users must keep the cable section below its thermal limit even when the tip sees higher temperatures.

Grove port and 3.0 V operation

The unified socket accepts standard Grove cables for plug-and-play connection to microcontroller shields or HATs. Operating voltage is 3.0 V, so the host must provide a compatible logic level. The package weighs 54 g and ships without a battery. Verify that your development board exposes a Grove I/O port before ordering.

Highlights

  • ±0.5 % accuracy from –10 °C to +85 °C
  • Operates in extreme conditions from –55 °C to +125 °C
  • Built-in alarm flags temperatures outside set limits
  • Waterproof probe enables immersive temperature detection
  • Grove socket with pre‑assembled resistor gives plug‑and‑play convenience

Specifications

TypeSensors

Questions about this item

Which probe length or cable type should I choose for this sensor?

The sensor comes as a single 2 metre waterproof probe with a pre-assembled pull-up resistor and Grove connector, so there are no alternative lengths or cable types to select.

What does the ±0.5% accuracy mean for readings between -10°C and +85°C?

In that range the sensor reports temperature within ±0.5% of the absolute value, giving reliable measurements for HVAC, environmental monitoring or process control.

How does the 1-Wire interface limit the number of sensors on one data line?

Each device draws power from the data line itself, so the practical device count is limited by total cable capacitance and the 3.0 V supply; keep the cable run under 70 °C to avoid signal degradation.

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