• Description

BMP280 + SI7021 Barometric, Temperature, and Humidity Sensor

Experience precise atmospheric measurement with the GY-21P Atmospheric Sensor Breakout. This compact device integrates BMP280 and SI7021 sensors for accurate readings of barometric pressure, humidity, and temperature. Its I2C communication protocol ensures seamless integration, while its wide operating range, from 30,000Pa to 110,000Pa for pressure, 0% to 100% for humidity, and -40°C to +85°C for temperature, provides comprehensive atmospheric insights. Sized at 13mm*10.6mm, it's compact yet powerful, offering a relative accuracy of 12 Pa and operating voltage range of 1.8V to 3.6V. Ideal for smartphones, tablets, and various IoT applications, this module is your go-to solution for precise atmospheric sensing.

Quick Spec

• Operation Voltage: 3.3V
• I2C & SPI Communications Interface
• Temperature Range: -40°C ~ +85°C
• Humidity Range: 0 – 100% RH, = 3% from 20-80%
• Pressure Range: 30,000Pa to 110,000Pa, relative accuracy of 12Pa, absolute accuracy of 100Pa
• Altitude Range: 0 to 9.2km, relative accuracy of 1m at sea level, 2m at 9.2km
• Dimensions: 13 x 10.6mm

Dimensions

Pinout

• VIN: Module power supply – 3.3 V
• GND: Ground
• SLC: I2C Clock
• SDA: I2C data

Wiring Diagram

Sample Code

Resources

• BMP280 Datasheet
• SI7021 Datasheet
• BMP280 Arduino Library
• SI7021 Arduino Library
• Arduino Tutorial
• Arduino Forum

Shipping List

• 1 x BMP280 + SI7021 Barometric, Temperature, and Humidity Sensor
• 1 x 4-Pin SIL Male Header

BMP280 + SI7021 Barometric, Temperature, and Humidity Sensor

• Brand: Generic
• Product Code: GY-21P
• Weight: 0.002kg
• Product Status : Active

Stock

Warehouse	Stock Status	Location
Centurion	In Stock	H19-03
Stellenbosch	In Stock	B0151
Bulk Location	No Stock

We ship free of charge between branches to complete your order.

• R298.00 (Inc Tax: R342.70)