Raspberry Pi NFC HAT based on PN532 with 13.56 MHz frequency range and interfaces I2C SPI UART for payment system and Bluetooth and WiFi devices chaining and smartphone NFC Fafeicy 3V (compatible with 5V) Measuring

3V (compatible with 5V) Measuring range: 400-5000PPM optional Output signal: Serial UART (TL level 3

The TEC1-12706 Peltier element must be used in conjunction with a heatsink or thermal paste to avoid damage

Aperture: 4mm

Principle: this sensor uses the principle of La-Ser scattering

In addition

Raspberry Pi NFC HAT based on PN532 with 13.56 MHz frequency range and interfaces I2C SPI UART for payment system and Bluetooth and WiFi devices chaining and smartphone NFC Fafeicy 3V (compatible with 5V) MeasuringThis is a Raspberry Pi NFC HAT based on PN532 that operates in the 13. 56 MHz frequency range. It supports three communication interfaces: I2C, SPI and UART. NFC (Near Field Communication) is a wireless technology that allows contactless point to point data communication between devices within a short distance of 10 cm. It is widely used in applications such as access control system, smart tickets, food card, etc. Based on the popular NFC controller