ME-BME280 is a Breakout Board featuring a Sensortec ME280 Temperature, Humidity & Pressure Sensor. The board has selectable I2C address jumper (solder link GS2), I2C pull-up resistors, 7 pin header 2.54mm, and two mounting holes 3.5mm. Default setting of the board; single power rail =Vdd_IO (solder link GS1), pull-ups resistors (R2, R3) 10k, protocol selector resistor 0ohm (R1), decoupling capacitors 0.1uF on both power supply pins & Vdd_IO. If you connect board to both power rails VDD_IO 1.8V and 3.3V be sure to remove the power rail jumper GS1! Package 2.5 mm x 2.5 mm x 0.93 mm metal lid LGA Digital interface I2C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz) Supply voltage main supply voltage range: 1.71 V to 3.6 V VDDIO interface voltage range: 1.2 V to 3.6 V Operating range -40+85 C, 0100 % rel. humidity, 3001100 - Humidity sensor and pressure sensor can be independently enabled/disabled has stepped up their game with their new BMP280 sensor, an environmental sensor with temperature, barometric pressure that is generation upgrade to the BMP085//BMP183. This sensor is great for all sorts of weather sensing and can even be used in both I2C and SPI! This precision sensor from is the best low-cost, precision sensing solution for measuring barometric pressure with 1 absolute accuraccy, and temperature with 1.0&;C accuracy. Because pressure changes with altitude, and the pressure measurements are so good, you can also use it as an altimeter with 1 meter accuracy The BME280 is -generation of sensors , and is the upgrade to the BMP085//BMP183 - with a low altitude noise of 0.25m and the same fast conversion time. It has the same specifications, but can use either I2C or SPI. For simple easy wiring, go with I2C. If you want to connect a bunch of sensors without worrying about I2C address collisions, go with SPI. Colour: Material:plastic Package Contents: 1 x BME280 sensor module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.