Raytac’s MDBT42T-AT is a BT 5.4 stack (Bluetooth® low energy or BLE) module designed based on Nordic nRF52805 SoC solution, which incorporates a UART interface in only peripheral role for data bridge in a compact size.

• Pre-Loaded with Raytac's AT command firmware (Peripheral role)
• Nordic nRF52805 SoC Solution
• A recommended 3rd-party module by Nordic Semiconductor.
• BT5.4 & BT5.2 & BT5.1 & BT5 Bluetooth Specification Certified.
• Certifications: FCC, IC, CE, Telec (MIC), KC, SRRC, NCC
• 32-bit ARM® Cortex™ M4F CPU
• 192kB Flash Memory / 24kB RAM
• RoHS & Reach Compliant.
• Dimension：7.2 x 11.2 x 2.05 mm
• 10 GPIO
• Chip Antenna
• Interface: UART
• MTU upto 247 bytes
• Works with MDBT42Q-ATM / MDBT42Q-PATM (Central role)

• Datasheet