The Series RSM or Room Status Monitor by DWYER is designed and develop to monitor low pressure in protected environments like hospital isolation rooms. It is durable and highly efficient in monitoring and alarming during critical low pressure. It is built with user-friendly interface in RGB LCD display. The interface allows users to easily access pressure, security, alarm setup, and calibration. A password can also be set up. The RSM has built-in LED lights (red and green) and an audible alarm(with time delay feature). Housed in fire retardant plastic that has NEMA 1 (IP20) rating, RSM can be use indoors.