HC-12

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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 of fers 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. Show more