SI4438 Wireless Serial Communication Module HC-12 V4 0 1000m Range

Discover the SI4438 Wireless Serial Communication Module HC-12 V4 0 1000m Range — a standout decor pick featuring wireless, easy to use design for dependable, everyday performance.

Specifications

Brand Name: Aideepen

Certification: NONE

DIY Supplies: Electrical

Data Record: No

Electronic: No

Material: Plastic

Model Number: Communication Module

Output Voltage: Communication Module

Semi-finishedproduct: No

Size: Communication Module

Style: Communication Module

Type: Communication Module

Features:

1. Long-range wireless transmission with an air-to-air baud rate of 500 bps and a communication range of up to 1,000 meters in open areas

2. Operating frequency range of 433.4–483.8 MHz, with up to 254 communication channels

3. Maximum transmit power of 100 mW (20 dBm) (8 power levels available)

4. Four operating modes to suit various application scenarios

5. Built-in MCU for communication with external devices via serial port

Product Introduction

The HC-12 wireless serial communication module is a new-generation, multi-channel embedded wireless data transmission module. It operates in the 433.4–483.8 MHz frequency band, supports multiple channels with a 400 kHz step size, and offers a total of 127 channels. In default mode, the module has a

maximum transmit power of 100 mW (20 dBm), an air data rate of 5000 bps, a receive sensitivity of -116 dBm, and a communication range of 1000

meters in open terrain.

The module uses a through-hole package and supports surface-mount soldering. With dimensions of 27.4 mm × 13.2 mm (excluding the spring antenna), it is easy for customers to integrate into application systems. The module features a PCB antenna socket (ANT1) that allows users to connect an external antenna via coaxial cable to the 433 MHz band (compatible with 433.4 MHz–450 MHz) or the 470 MHz band (compatible with 450 MHz–483.8 MHz), depending on the selected communication channel. The module also includes an antenna solder pad (ANT2)

for users to solder a spring antenna. Users can select one of these antenna options based on their application requirements.

The module contains an MCU, eliminating the need for additional programming. Various pass-through modes simply transmit and receive serial data, making it easy to use. The module supports multiple serial pass-through modes, which users can select using AT commands according to their application requirements.

The average operating currents in idle mode for the four modes (FU1, FU2, FU3, and FU4) are 3.3mA, 85μA, 16.5mA,

and 16.5mA, respectively, with a maximum operating current of approximately 120mA (during full-power transmission).

Product Specifications:

Model: HC-12 SMD Version V4.0

Communication Interface: UART 3.3V–5V TTL Level

Communication Level: 3.3V/5V Level

Operating Humidity: 10%–90%

RF Chip Solution: SI4438, with external 433MHz antenna

Transmission Rate: 4–5 KB/s

Communication Range: 1 km (FU4), half-duplex, 1200–115,200 bps

Operating Voltage: 3.0–5.5 V

Communication Interface/Level: UART 3.3/5 V TTL level

Operating Frequency Band: 433.4–484.0 MHz, 254 channels total

Transmit Power (MAX): 100 mW (20dBm)

Idle current in four modes: FU1: 3.3mA, FU2: 85μA, FU3: 16.5mA, FU4: 16.5mA,

Operating current (MAX): 100mA (full power)

Operating temperature: -40~+85°C

Reference distance: 1000m

Module dimensions: 27.4×13.2

Built-in firmware, auto-pairing upon power-up. Note: At least two modules are required for interconnection.

Product Applications:

Wireless sensors

Residential and commercial building security

Wireless robot control

Industrial remote control and telemetry

Automated data acquisition

Container information management

POS systems

Wireless data collection for gas meters

Keyless entry systems for vehicles

Wireless PC networking

Product List:

1x Module

1x Spring Antenna

Options

• Color: Red

Frequently Asked Questions

Q: What is the SI4438 Wireless Serial Communication Module HC-12 V4 0?

A: The SI4438 Wireless Serial Communication Module HC-12 V4 0 is a quality decor pick. Long-range wireless transmission with an air-to-air baud rate of 500 bps and a communication range of up to 1,000 meters in open areas 2.

Q: What is the SI4438 Wireless Serial Communication Module HC-12 V4 0 made of?

A: The SI4438 Wireless Serial Communication Module HC-12 V4 0 is made from Plastic Model Number, measuring Communication Module Style.

Q: Why choose the SI4438 Wireless Serial Communication Module HC-12 V4 0?

A: The SI4438 Wireless Serial Communication Module HC-12 V4 0 stands out in our decor range — Operating frequency range of 433.4–483.8 MHz, with up to 254 communication channels 3.