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New: The GT-38 wireless serial communication module is a new generation of multi-channel embedded wireless data transmission module. The wireless working frequency band is 433-458.5MHz, and multiple channels can be set. The stepping speed is 100KHz, and there are a total of 255 channels. The module's maximum transmit power is 100mW (20dBm), the receiving sensitivity is -116dBm at 5000bps air baud rate, and the open distance can reach 1200m communication distance.
This is a new generation of multi-channel embedded wireless data transmission module. Stepping speed: 100KHz; Receiving sensitivity : -116dBm at 5000bps air baud rate; Open distance: can reach 1200m communication distance. The module adopts stamp hole encapsulation and can be patch-welded. which is very convenient for customers to embed in the application system.
Tow types interface for antenna: There is a PCB antenna holder ANT1, can use the 433M frequency band external antenna through the coaxial line. There is also an antenna welding hole ANT2 in the module for the spring antenna. You can select one of the antennas according to your requirement. It contains MCU inside, you don't need to program the module separately. When using, each mode can only send and receive serial port data, only in the same air baud rate can communicate with each other!
Four working modes to suit different applications. Maximum 100mW (20dBm) transmit power (8-speed power can be set); The number of bytes sent at one time is up to 256 bytes. Module supports one-to-one, one-to-many, many-to-many connections, transferring data to each other in a half-duplex manner. Four modes FU1, FU2, FU3, and FU4 have an average operating current of 3.6mA, 80A, 16mA, and 16mA in idle state, and the maximum operating current is 100mA (full power emission state).

Description

Description:
At the transparent transmission mode, baud rate, and wireless communication channel must be set to the same. The factory default settings are FU3, 9600bps (8-bit data, no parity, 1 stop bit), and CH100 (443MHz). This mode can automatically adjust the air baud rate according to the serial port baud rate, and the communication distance is the farthest at low baud rate.When using, it is generally not limited to the number of bytes sent continuously to the serial port of the module. However, in view of environmental interference and other factors, when a large amount of data is continuously transmitted at a time, some bytes may be lost. Therefore, the host computer should have mechanisms such as answering and resending to avoid information loss.

Characteristics:
Power supply voltage : 3.2 V -- 5.5 V (if the modules working long hours in emission state, suggested that when the power supply voltage is greater than 4.5 V )
you need concatenating a 1N4007 diode to avoid module built-in LDO got fever)
Long-distance wireless transmission (opening 1200 m / FU4 mode, air baud rate 1000bps)
Operating frequency range (433-458.5MHz, up to 255 communication channels)
Maximum 100mW (20dBm) transmit power (8-speed power can be set)
Four working modes to suit different applications
Built-in MCU for communication via serial port and external devices
The number of bytes sent at one time is up to 256 bytes.
Module supports one-to-one, one-to-many, many-to-many connections, transferring data to each other in a half-duplex manner.

Package Including
1 * 433Mhz SI4463 Wireless Module Serial Port 1200M
1 * Spring antenna
1 * PCB Antenna