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NRF52810 beacon tag with accelerometer sensor BLE 5.0 Low Power Consumption Bluetooth Module Indoor Positioning ibeacon

NFC RFID module RC522 MFRC-522 PN532 RDM6300 Kits S50 13.56 Mhz 125Khz 6cm With Tags SPI Write & Read for arduino

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Sound Recorder Module Voice MP3 WAV Music Player with Loudspeaker Button Control 8M RAM Capacity DIY Music Box for Greeting Card

DC 5V Dual Spray Three Spray Mini Humidifier Modulle Ultrasonic Atomizer Humidifier Module Mist Maker and Driver Circuit Board

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Type-C 15W 3A 18650 Lithium Battery Charger Module DC-DC Step Up Booster Fast Charge UPS Power Supply / Converter 5V 9V 12V

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