Cheap VS. Brand temperature and humidity sensors. I dug deeper this time.

About this Video

• Video Title: Cheap VS. Brand temperature and humidity sensors. I dug deeper this time.
• Channel: Make, Test, Repeat (Gubutek)
• Speakers: Gubutek
• Duration: 00:08:30

Introduction

This video compares inexpensive AliExpress temperature and humidity sensors to branded sensors, presenting a detailed analysis of their calibration, authenticity, and performance in a 24-hour test. The creator expands on a previous video, adding a new sensor (PMS 5003 SD) to the comparison.

Key Takeaways

• Calibration: The video discusses the calibration tolerances specified in the datasheets for both types of sensors.
• Authenticity: The creator investigated the authenticity of the AliExpress sensors using a microscope to check for laser markings.
• 24-hour Test Results: The AliExpress sensors showed less variation in relative humidity measurements (less than 0.1%) compared to the branded sensors (around 2.2%). The branded sensors were more consistent in temperature measurements.
• Sensor Choice Recommendation: Based on the tests, the creator concludes that AliExpress sensors offer better value for money in terms of relative humidity measurements, but branded sensors might be preferred for temperature measurement depending on the desired accuracy and application.
• Testing Limitations: The creator acknowledges the limitations of testing solely in a basement environment with controlled temperature and humidity.