7Semi SHT45 Temperature & Humidity Sensor Breakout 1.27mm Pitch

The 7Semi SHT45 Tiny Temperature and Humidity Sensor Board is a compact, high-accuracy environmental sensing module designed for precise temperature and relative humidity measurements. Built around the Sensirion SHT45 sensor, it provides 16-bit digital measurements through an I2C interface with ultra-low power consumption.

The sensor offers +/-0.1 deg C typical temperature accuracy and +/-1.0% RH typical humidity accuracy. It supports temperature measurements from -40 to +125 deg C and relative humidity measurements from 0 to 100% RH, making it suitable for a wide range of environmental monitoring applications.

Operating from a nominal 3.3V supply, the board features a compact narrow-neck PCB design that helps reduce thermal interference from connected electronics. The 4-pin, 1.27mm pitch interface enables integration with compatible microcontrollers and embedded systems.

The integrated sensor heater supports sensor recovery in challenging humidity conditions. With its compact design, low power consumption, and reliable digital output, the module is suitable for IoT devices, smart home automation, HVAC systems, portable instruments, environmental monitoring, and battery-powered applications.

Key Features

• High-Accuracy Temperature Measurement: Provides +/-0.1 deg C typical temperature accuracy for precise environmental monitoring.

• High-Accuracy Humidity Measurement: Offers +/-1.0% RH typical accuracy for reliable relative humidity sensing.

• Wide Measurement Range: Supports temperature measurements from -40 to +125 deg C and relative humidity measurements from 0 to 100% RH.

• 16-Bit Digital Output: Provides temperature and humidity measurements through an I2C interface.

• Ultra-Low Power Consumption: Supports an average sensor current as low as 0.4 uA at 1 measurement per second in low-repeatability mode with the heater disabled.

• I2C Communication Interface: Uses a fixed 7-bit I2C address of 0x44 for communication with compatible microcontrollers.

• Integrated Sensor Heater: Features a software-controlled heater for sensor recovery and operation under challenging humidity conditions.

• Compact Tiny Board Design: Features a narrow-neck PCB layout that helps minimize heat transfer to the sensing element.

• 1.27mm Pitch Connector: Equipped with a 4-pin male header for compact embedded connections.

• 3.3V Operation: Designed for a nominal 3.3V power supply.

• Reliable Digital Communication: Supports CRC-8 checksum verification for measurement data.

• Versatile Applications: Suitable for IoT devices, HVAC systems, environmental monitoring, smart home automation, and portable instruments.

Product includes

• 1 x 7Semi SHT45 Tiny Temperature and Humidity Sensor Board with 4-pin Male Header (ES-13535)