Hw-044 Datasheet [upd] Jun 2026

The HW-044 is a . It is designed specifically for use with microcontroller platforms such as Arduino, ESP32, STM32, and Raspberry Pi.

| Feature | HW-044 | HW-050 (Mini 3.3V) | Logic Level Converter (Bi-Directional) | |---------|--------|---------------------|------------------------------------------| | Regulator | Yes (AMS1117) | Yes (AMS1117) | No | | Level Shifter | Yes (4-channel) | No | Yes (4- or 8-channel) | | Max Current | 800mA | 800mA | N/A (external supply) | | Typical Use | Power + Logic | Pure power | Pure logic | | Cost | $2-3 | $1-2 | $1-2 | hw-044 datasheet

Whether you’re a hobbyist building your first IoT device or an engineer prototyping a mixed-voltage system, the HW-044 remains an excellent choice—provided you know its datasheet by heart. The HW-044 is a

: Supports up to 115 Kbps (guaranteed up to 120 kbps in some variants). : Supports up to 115 Kbps (guaranteed up

Connect TXD (Module) to RXD (Arduino Pin 0) and RXD (Module) to TXD (Arduino Pin 1).