The SI4463S4S-V1-C2A Wireless Module SMD RoHS manufactured by Vollgo is a series of miniature low power transmitters and receivers designed for use in ISM bands.It is highly integrated and features an efficient power amplifier with up to 250mW of power output. Other features include on-chip IF filters, automatic channel select, and automatic ringing detection. It also has up to 8-bit addressing and up to 32-bit addressing on up to 16 channels.This module is also RoHS compliant and can be used for a variety of applications, such as industrial control, remote control and monitoring, home automation, and wireless sensor networks.