SHT20 MRS Type I2C Humidity and Temperature Sensor Probe -7Semi

🔹 Overview
The 7Semi SHT20 MRS Type I2C Sensor Probe is a digital temperature and humidity sensing probe based on the Sensirion SHT20 sensor.
Measures:
Temperature
Relative Humidity
Provides fully calibrated digital output (I2C)
Designed for industrial, outdoor, and remote sensing applications
👉 Combines sensor + protective probe + cable in one unit
🔹 Working Principle
Humidity sensing: Capacitive polymer element detects moisture changes
Temperature sensing: Bandgap-based sensor
Internal system:
Signal conditioning
ADC conversion
Digital linearization
👉 Output is pre-calibrated, linear digital data
🔹 Measurement Characteristics
🌡️ Temperature
Range: –40°C to +125°C
Accuracy: ±0.3°C (typical)
💧 Humidity
Range: 0% to 100% RH
Accuracy: ±3% RH (typical)
📊 Response Time
Humidity: ≤ 8 s
Temperature: ≤ 5 s
🔹 Electrical Characteristics
Operating Voltage: 3.3V (typical), up to 5V supported
Current Consumption: < 1 mA (active)
👉 Suitable for low-power embedded systems
🔹 Communication Interface
Protocol: I2C (digital)
Wiring:
VCC
GND
SDA
SCL
👉 Easy integration with microcontrollers (Arduino, ESP32, etc.)
🔹 Probe Design (MRS Type)
🔧 Construction
Stainless steel porous probe housing
Mini Round Shell (MRS) connector
Cable length: ~1 meter
🔍 Features
Breathable shell for accurate humidity sensing
Dust and particle filtering (5–120 µm pores)
Waterproof / IP65 protection
🔹 Environmental Durability
Works in:
High humidity
High temperature
Dusty or corrosive environments
Features:
High pressure resistance (~150 bar)
Anti-corrosion and anti-contamination design
Long-term stability with minimal drift
🔹 Internal Features
CMOSens® technology (Sensirion)
Factory calibration (multi-point)
Digital signal processing
Low drift over time
🔹 Functional Behavior
Continuously measures:
Ambient temperature
Relative humidity
Outputs:
Digital data via I2C
No need for:
External ADC
Calibration routines
🔹 Key Technical Features
Wide measurement range
Digital I2C output
Fully calibrated sensor
Stainless steel probe housing
Waterproof and dustproof design
High environmental resistance
Low power consumption
🔹 Advantages
Suitable for industrial and outdoor use
Remote sensing via probe + cable
High durability and long lifespan
Easy MCU integration
🔹 Limitations
Moderate accuracy compared to newer sensors (SHT4x series)
Response time slower than bare-chip sensors
Requires airflow for best humidity accuracy
🔹 Technical Summary
The SHT20 MRS probe is a rugged digital temperature & humidity sensor system that:
Combines CMOS sensing + industrial probe design
Provides stable, calibrated digital output
Is optimized for harsh environments and remote sensing applications
👉 It is best classified as an industrial-grade environmental probe sensor, not just a basic breakout module.