MDBT42Q-192KL MODULE BLUETOOTH BT5.1 & BT5 NRF52811 CHIP ANTENNA The MDBT42Q-192KL is a high-quality product offering MODULE BLUETOOTH BT5.1 & BT5 NRF52811 CHIP ANTENNA. With a shrink ratio of N/A and -40°C~+85°C operating temperature, it provides reliability in various applications.