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SMS control
you should leave the ENABLE pin disconnected
87 × 64 × 28 mm (3
You can solder wires directly to the board or solder in either the 3×1 
Adafruit Si7021 Temperature + Humidity Breakout - 3251 v3.51 SMS controlMeasure Temperature with a Sensor Made for Embedded Builds The Temperature and Humidity Sensor Si7021 Breakout Board is a temperature and humidity sensor with i2c designed for climate logging, weather nodes, and room monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds. Key details include Interface: I2C. Important: Sensor response time depends on airflow, mounting, and thermal contact.
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