7Semi SHT41 16-bit I2C Digital Humidity and Temperature Sensor Probe
7Semi SHT41 16-bit I2C digital humidity and temperature sensor probe – a high-precision environmental sensor with a cable-mounted probe.
What this sensor is
The 7Semi SHT41 Sensor Probe is a high-precision digital environmental sensor with a cable (probe type) that measures:
Temperature
Humidity
It's part of Sensirion's SHT4x series, widely used in industrial & IoT applications
Why Probe Version matters
Unlike normal breakout boards:
Breakout sensor on PCB
Probe sensor on cable
This allows:
Remote sensing
Placement away from heat sources
Better real-world accuracy
Key Specifications
Resolution: 16-bit (high precision)
p>Temperature Range: -40C to +125C
Temperature Accuracy: 0.1C to 0.2C
Humidity Range: 0100% RH
Humidity Accuracy: 1.5% RH
I2C Address: 0x44
Working Principle
Uses CMOSens technology (integrated sensing + processing)
Internally measures:
Humidity capacitive sensing
Temperature bandgap sensor
Outputs fully calibrated digital values directly via I2C
Typical Pinout
(Depends on breakout/adapter board used)
VCC 3.3V
GND Ground
SDA I2C Data
3.3V logic
Key Features
Very high accuracy (near industrial grade)
Factory calibrated (no calibration needed)
Ultra-low power great for battery devices
Fast response time
Stable long-term performance
Applications
Greenhouse monitoring
Smart home systems
Weather stations
Industrial sensing
Data logging
HVAC systems
Important Notes (VERY IMPORTANT)
1. Placement is critical
For accurate readings:< Probe helps solve this problem
2. Airflow required
Needs proper airflow
Avoid sealed enclosures
3. Self-heating effect
Continuous fast readings can heat sensor slightly
Best practice:
Take readings every 15 seconds
4. Not waterproof (usually)
Probe waterproof (unless specified)
Protect from direct water
SHT41 vs SHT40
Feature | SHT40 | SHT41 |
Accuracy | High | Slightly better |
Cost | Lower | Higher |
Performance | Excellent | Premium |
SHT41 vs DHT22
Feature | SHT41 | DHT22 |
Accuracy | Very high | Medium |
Stability | Excellent | Moderate |
Interface | I2C | Single-wire |
Use | Professional | Beginner |
When to use this
Use SHT41 Probe if you want:
High accuracy environmental monitoring
Remote sensing (via cable)
Reliable IoT systems
Industrial-level performance
When NOT to use
Avoid if:
You want cheapest option
Simple hobby project use DHT11/DHT22
Final Understanding
This sensor = high-end temperature + humidity probe for real-world deployment Much better than basic sensor