The TX118SA-4 is a wireless module manufactured by Velex. It is an 18x18mm RoHS compliant electronic component designed for low power applications such as embedded systems and networks. The module features a powerful on-board processor, an integrated transceiver, and a full-duplex transceiver paired with an analog-to-digital converter for robust operation. It also features an integrated antenna, along with a wide operating temperature range. Additionally, the module supports a wide range of wireless data transmission standards and protocols including Wi-Fi, Bluetooth, ZigBee, and LoRaWAN. The TX118SA-4 is designed for use in a variety of applications, and its small size and low power consumption makes it a great choice for use in low-profile designs.