[Chip solution]：AX5243

[Working frequency]：425~450.5MHz

[Transmit power]：30dBm

[Communication distance]：6km

[Interface type]： UART

[Product weight]：5.1±0.1g

[Introduction]：E31-433T30S is a 433M SMD wireless serial port module (UART) with AX5243 radio frequency chip imported from AXSEM from Switzerland. It has half-duplex, integrated transceiver and transparent transmission mode, 425~450.5MHz frequency band (default 433MHz), TTL level output , with air wake-up function (ultra-low power consumption).