The HONEYWELL 20K TEMP WALL MODULE (Model: TR21-J-US/U) is a high-performance temperature control device designed for precise environmental monitoring. Made in the USA, this module features LONJACK technology for seamless connectivity and integration into building management systems. Its compact design allows for easy installation on walls, making it suitable for both residential and commercial applications. With a robust construction, it ensures long-lasting performance and compliance with industry standards.