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8devices BLACK bean Radio module DS3231 Real Time Clock Memory Module with Battery 68 x 53 mm (standard 68 x 53 mm (standard Arduino shield footprint) Origin Original Authentic Warranty 7 day warranty on manufacturing defects Support Email & WhatsApp 24 7 Key Features configurable) Default Device Name HC 05 (Configurable via AT Commands) Supported Profiles SPP (Serial Port Profile) Modulation GFSK (Gaussian Frequency Shift Keying) Chipset CSR BC417 (Cambridge Silicon Radio) LED Indicator On board (Fast blink = searching How to Use ensuring proper power supply between 3
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