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HC-12

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HC-12

HC-12

$10.00

 

433MHz HC-12 SI4438 Wireless Serial Port Module (Bluetooth Alternative)

The HC-12 SI4438 is a 433MHz wireless serial port module designed for long-range serial communication. It offers adjustable transmission distance, multiple communication channels, and configurable power output, making it a practical replacement for Bluetooth in applications requiring extended range.

Key Features

  • Operates in the 433MHz frequency band

  • Adjustable communication distance up to 1000 m

  • Supports up to 100 communication channels

  • Configurable transmit power up to 100 mW

  • Software upgrade support

  • Multiple working modes with varying current consumption

Default Factory Settings

  • Working mode: FU3

  • Baud rate: 9600 BPS

  • Communication channel: CH001 (433.4 MHz)

Electrical Characteristics

  • Power supply voltage: 3.3 V

  • Default idle current: 16 mA

Communication Performance

  • Default communication distance: approx. 600 m

  • Maximum communication distance: up to 1000 m (adjustable)

  • Air baud rate: 5000 BPS

Technical Specifications

Parameter Specification
Operating frequency range 433.4–473.0 MHz
Number of channels Up to 100
Maximum transmit power 100 mW (settable)
Power supply voltage 3.3 V
Default idle current 16 mA
Module size 27.8 × 14.4 × 4 mm

This compact HC-12 wireless serial module provides flexible configuration options and reliable long-distance communication within the 433MHz band.

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