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The MQ-6 sensor module comes with a Digital Pin which makes this sensor to operate even without a microcontroller and that comes in handy when you are only trying to detect one particular gas
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Logic Type: NAND Output Current: 5
Battery break in and cycling
Capacitor 1µF 50V
RFID Reader (125Khz - UART) steper motor The MQ-6 sensor module comesProduct Description (Professional) This 125KHz RFID Reader Module is a compact and reliable solution for reading low frequency RFID cards and tags. It supports EM4100 compatible cards and offers stable performance with an external antenna, providing a reading distance of up to 7cm. The module communicates via UART (TTL) interface, making it easy to integrate with microcontrollers such as Arduino, ESP32, and STM32. It is widely used in access control,
