YX-A11-R501053-G0807 is a wireless module manufactured by CND-tek which is a RoHS-compliant Pearlcotton module. It is a two-way communication module that is designed to provide short-range, low power wireless connectivity to a vast array of devices. It supports up to 50 nodes, has an operating frequency of 433MHz and a transmission rate of up to 250Kbps. It also has onboard power, antenna, and OLED display for easy installation. This module is suitable for applications such as home automation, industrial and medical devices, and other low-power connected devices.