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1/5/10pcs GY521 GY-521 MPU6050 IIC I2C Interface 3 Axis Analog Gyroscope Sensor Accelerometer Compatible Module for Arduino

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Flame sensor module relay module two-in-one Fire Alarm Flame Flame Detection 5v/12v Flame switch

Tuya WiFi 15 in 1 Air Quality Detector CO/CO2/HCHO/TVOC/AQI/PM0.3/PM1.0/PM2.5/PM10 Air Quality Tester Temperature Humidity Meter

HC-SR04 To World Ultrasonic Wave Detector Ranging Module Microcontroller Sensor hc sr04 For Arduino Distance Sensor