Based on Silicon Lab's si4432 chip,

our company has developed three modules with different package sizes: RF4432PRO, RF4432 and RF4432X1 to meet the needs of different customers. We recommend that customers choose the RF4432PRO wireless module with the best anti-interference performance. These modules all have extremely low receiving sensitivity (-121 dBm), coupled with the industry-leading output power of +20 dBm to ensure extended range and improved link performance.
RF4432PRO modules use lead-free technology for production and testing strictly, and comply with RoHS and Reach standards.