5pcs GY-21 HTU21 HTU21D Moisture Sensor Module Humidity Sensor Module I2C Interface

5pcs GY-21 HTU21D Temperature Humidity Sensor Breakout Board Module The HTU21D is a low-cost, easy to use, highly accurate, digital humidity and temperature sensor. This sensor is ideal for environmental sensing and data logging and perfect for a weather stations or humidor control systems. All you need is two lines for I2C communication and you'll have relative humidity readings and very accurate temperature readings as a bonus! There are only four pins that need to be hooked up in order to start using this sensor in a project. One for VCC, one for GND, and two data lines for I2C communication. This breakout board has built in 4.7k pull up resistors for I2C communications. If you're hooking up multiple I2C devices on the same bus, you may want to disable these resistors. Humidity and Temperature Sensor - SHT15 Breakout, it has a typical accuracy of +-2 percent with an operating range that's optimized from 5 to 95 percent RH. Operation outside this range is still possible - just the accuracy might drop a bit. The temperature output has an accuracy of ±1 degree from -30~90 degree. If you're looking to measure temperature more accurately, we recommend the MCP9808 High Accuracy I2C Temperature Sensor Breakout Board. Such a lovely chip - so we spun up a breakout board that includes the Filtered version (the white bit of plastic which is a PTFE filter to keep the sensor clean), a 3.3V regulator and I2C level shifting circuitry. This lets you use it safely with any kind of microcontroller with 3.3V-5V power or logic. Each order comes with one fully assembled and tested PCB breakout and a small piece of header. You'll need to solder the header onto the PCB but it’s fairly easy and takes only a few minutes even for a beginner. Board size: 1.2*1cm(approx) Packet Contains: 5pcs GY-21 Humidity Sensor with I2C Interface