The ECC2857842EU is a RF Module manufactured by Feng Niao RF. It is RoHS compliant, meaning that it is built with components that contain no hazardous substances. The module offers great performance and distance for wireless radio applications, such as Zigbee, ISM 2.4GHz, or Wi-Fi, etc. It operates on a voltage range of 1.8-3.6V DC and has a power consumption of less than 13dBm, making it an energy-efficient solution. It is also relatively small, measuring only 13.6*13.6mm making it easy to integrate into designs. Additionally, it has a wide operating temperature range of -40 to +85?, making it suitable for colder climates.