PCB for Celsius Fast-Response, ±0.1°C Temperature Sensor


This board-level version of the Celsius Temperature Sensor can be tightly integrated into projects or used in dry environments.

In stock

HS Code: 8534.00.00.40

Product Description

The Celsius temperature sensor is a fast-response, high-accuracy temperature sensor. We have a sealed and protected version available here, but this unsealed board-level version is great for integrating directly into projects and for use in dry environments.

The sensor is the Measurement Specialties TSYS01, which is accurate to ±0.1°C and communicates over I2C. It operates on 3.3V I2C voltage but can accept power input up to 5.5V. It includes four solder pads for ground, 3.3V-5.5V power, and 3.3V I2C lines.

The TSYS01 sensor itself has a fast time response and we designed the whole package to maintain that speed.

The electrical schematic and board layout are open-source and the design files are available in the Technical Details tab. Feel free to adapt for your own needs.


  • 1 x Celsius Temperature Sensor (PCB Only)


Supply Voltage3.3 to 5.5 volts
I2C Logic Voltage (SDA and SCL)3.3 volts
Peak Current1.4 mA
Operating Temperature-40 to +125°C-40 to 257°F
Storage Temperature-55 to +150°C-67 to 302°F
Absolute Accuracy+/- 0.1°C (when used between -5 to 50°C)+/- 0.18°F
+/- 0.5°C (when used between -40 to 125°C)+/- 0.9°F


TSYS01 Datasheet (PDF)

Celsius Temperature Sensor Schematic (PDF)

Revision History

January 26th, 2016

  • R1 – Initial release

Quick Start

1. Download TSYS01 Arduino Library.

2. Install software such as the Example Code to your microcontroller.

3. Solder appropriately colored wires to the solder pads.

4. Connect the bare wires to the appropriate microcontroller pins, using a logic level converter if your board has 5V logic:

  • Green: SCL (3.3V logic)
  • White: SDA (3.3V logic)
  • Red: +2.5-5.5V
  • Black: Ground

Example Code




Blue Robotics Forum – Sensors