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This ESP-01/01S Relay based on ESP-01/01S WIFI module
This Matrix Keypad 3 X 4 has 12 buttons
a receiver and a control circuit
accelerometers
Adding a Bluetooth module interface
CCS811 Carbon Monoxide Gas Sensor Soldered:Without Soldered Pins This ESP-01/01S Relay based onDescription: The CJMCU 811 is an ultra low power digital gas sensor that integrates a sensor and a CCS801 bit MCU with an analog digital converter (ADC) for detecting indoor air quality, including carbon monoxide (CO) and a wide range of Volatile Organic compounds (VOCs). Feature: Ultra low power consumption can be used in battery powered equipment High sensitivity, fast heating Intelligent algorithm calculates TVOC eCO2 values I2C signal output,
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