SHT40 I2C Humidity and Temperature Sensor Probe (Plastic) -7Semi

Overview

• Sensor Type: Digital humidity and temperature probe using the SHT40 CMOSens sensor.

• Probe Material: Durable plastic + metal housing, suitable for general environmental monitoring.

• Interface: I2C digital communication easy to interface with microcontrollers like Arduino, ESP32, Raspberry Pi, STM32, etc.

• Operating Voltage: Typically 3.3V (some versions support up to ~5.5V depending on wiring and board design).

Key Features

Accurate Measurements: Temperature range: 40C to +125C with high precision. Relative humidity range: 0% to 100% RH, fully digital output.

16bit). Very low power consumption (excellent for battery'powered systems).

Integrated Circuit Level Features: Usually factory calibrated and compensated (no need for external corrections). Supports multiple predefined I2C device addresses for systems with more sensors.

Built'In Components: Some modules include pull'up resistors and filter capacitors built in, simplifying wiring. Some variants also include an internal heater, configurable to help prevent condensation in damp conditions.

How It Works

• The internal SHT40 sensor measures temperature and relative humidity simultaneously.

• Communication is over the I2C bus (standard digital protocol) one data lpical wiring: Red: VCC (Power) Black: GND (Ground) Yellow: SDA (Data) Green: SCL (Clock)

Typical Specifications

• Temperature Range: 40C to +125C

• Humidity Range: 0% to 100% RH

• Typical Humidity Accuracy: ~1.8% RH

• Typical Temperature Accuracy: ~0.2C

• I2C Default Address: 0x44 (typical for SHT40 devices)

• Power Consumption: Ultra'low, ideal for energy'sensitive applications.

Applications

This SHT40 probe is widely used in systems that require reliable and precise humidity/temperature measurements:

• trong> (heating, ventilation, and air conditioning).

• Agriculture and greenhouse sensing.

• IoT sensor networks and smart home controllers.

• Industrial automation and process control.

• Weather stations and data logging systems.

Tips & Notes

Digital Sensor: Being digital, it delivers exact humidity and temperature values not analog voltages so you read them directly via I2C. Pull'Ups Required: Some boards include pull'up resistors, but if your module doesn't, you'll need external pull'ups on SDA/SCL for stable I2C communication. Probe Protection: The plastic'enclosed probe is moisture'resistant,