With coming depreciation and withdraw of Legacy Bluetooth Core Specification Version, BT4.1/BT4.0 has been defined to be withdraw in 1 July, 2020, which covered Nordic’s nRF51 series solution (Raytac MDBT40 series module).

Bluetooth SIG Announces Deprecation and Withdraw of Legacy Bluetooth Core Spec Version

To resolve this issue, Raytac has updated the MDBT40’s Bluetooth specification to BT4.2 with DID: D042310. Raytac MDBT40/MDBT40-P/MDBT40-n designed based on Nordic nRF51xxx SoC with integrated Bluetooth 4.2, Bluetooth 4.1, and Bluetooth 4.0 stack. MDBT40/MDBT40-P/MDBT40-n module incorporates: GPIO, UART, SPI, I2C, and ADC interfaces for connecting peripherals and sensors. The modules are all FCC/IC/Telec/CE/KC/SRRC/NCC/ANATEL/RCM pre-certified (MDBT40-P includes CNC/IFETEL), which can speed up customers’  easy hardware design, reduce BOM cost, and enhance Time-To-Market efficiency

The granted BT4.2 DID includes not only basic GATT, RF PHY and Link Layer, but also a completed coverage of BLE software stack: Proximity Profile; Heart Rate Profile; Health Thermometer Profile; Blood Pressure Profile; Running Speed & Cadence Profile; HID Over GATT Profile; Alert Notification Profile; Glucose Profile; Cycling Speed & Cadence Profile ; Mesh Profile which fully support customers to suit the needs of any application!