HaiLingKe Electronics Manuals

HaiLingKe HLK-B11 Serial-to-Bluetooth Transparent Module Specification Sheet

The HLK‑B11 module from HaiLingKe Electronics provides a single‑mode BLE 5.0 transparent bridge between a UART interface and Bluetooth, allowing simple wireless data transfer without deep protocol knowledge. It integrates a 32‑bit MCU, 500 KB flash, 64 KB RAM, and supports AT‑command configuration.

Key features include Bluetooth 5.0 support, operating voltage 2.5‑3.6 V, up to 11 GPIOs, one UART with up to 3.2 MHz baud rate, five PWM channels, an on‑chip temperature sensor, and an external antenna. The datasheet lists dimensions, pin definitions, typical application circuits, and full electrical parameters. This manual is written in Chinese.

Covers: Introduction · Features · Main Application Areas · Package Dimensions · Pin Definition · Typical Application Circuit