AS13-TTL is a 100mW industrial wireless data transceiver with high stability, operates at 433MHz. The module is designed and developed using imported RF chip SI4438 from Silicon Labs. The module features small size, high sensitivity, long transmission distance, high communication speed, etc., and the function of automatically completing communication protocol conversion and data transcending control can be realized internally. The module has two operating states and can be freely switched during operation. Receiving sensitivity is up to -124dBm, and the range is 1800 meters. High-speed transmission, low latency, high-performance and high stability are the features of the module. The power supply is 2.0-5.5V and working frequency is 425~450.5MHz锛?00KHz stepping锛宎 total of 256 channels, the factory default is 433MHz. There are 8 levels of air speed adjustable. The receiving sensitivity has nothing to do with the serial port rate or delay time. RXD and TXD are serial data transmission and reception pins, at the same time, the UART has 8 common baud rates to choose from, the supported baud rate range is 1200~115200 (bps); the UART parity mode also has odd parity, even parity and No parity. The user can judge which working mode the module enters according to the high and low level of the low delay working mode pin SET, SET is low level, the module enters the configuration working mode; SET is high level, and the module enters the transparent transmission working mode.cheap UART Module
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