[IC]：SI4432

[Frequency]：425~525MHz

[Power]：20dBm

[Distance]：1.6km

[Interface]：SPI

[Introduction]：E27-4333M20S is a 100mW wireless transceiver module, operates at 433MHz,with small-size(1.27 Pin pitch).E27-4333M20S is based on the original imported RF chip Si4432 from Silicon Labs. With diversified built-in antenna and excellent anti-interface performance, the chip supports frequency hopping.