HM-BT4501. Class: -. Communication protocol: Bluetooth v4.0. Dimensions: 17x12.5x2mm. Embedded Antenna: yes. Housing: SMD. Information: -. Interface: UART. Memory Size: -. Operating temperature: -40...+125°C. Power Supply: 1.8 - 3.6VDC. Series: -. Original product from manufacturer: Hoperf. Quantity in stock updated on 13/11/2025, 14:58