The GUARDIAN™ Ultraviolet Monitor visually indicates the level of germicidal ultraviolet energy that penetrates the quartz sleeve and the water within the disinfection chamber. The GUARDIAN™ Ultraviolet Monitor is capable of operating an optional Audio Alarm and Solenoid Valve. In addition, the GUARDIAN™ Ultraviolet Monitor will detect loss of ultraviolet due to lamp outage, component or power failure. Use of the Ultraviolet Monitor is recommended by the US Public Health Service "Criteria for the Acceptability of an Ultraviolet Disinfection Unit".
The Guardian Analog Ultraviolet Monitor is designed for models S2400B/C. 120V 60Hz.