The PRO 50 offers outstanding UV performance for commercial applications. Benefits: Ease of Maintenance: Troubleshoot using the user-friendly diagnostic system display High-performance amalgam UV lamp, reduces maintenance requirements by lasting up to 2 years replacement Reliable: UV sensor combination provides real-time UV dose Powerful/Space Saving: Revolutionary Amalgam Lamp provides 4x the output of standard output lamps, giving you compact single-lamp systems that are half the size of their predecessors Convenient: Features countdown timer with digital display and audible lamp change reminder for ease of maintenance Cool-Touch fan technology helps reduce the temperature within the chamber to prevent overheating Optional Accessories: COMMcenter – Displays UV dose, alarm history, lamp hours and other performance parameters. Includes dry contact connection for external functionality. Solenoid Valve: stops the flow of water through the chamber should the UV performance fall below a safe level Application: Perfect for a wide range of large homes or light commercial applications including, small businesses, hospitals, dentist offices, etc. Included Accessories: UV Sensor, Cool Touch Fan Vertical installation is mandatory! The PRO50 is validated through microbial testing. Through this testing, performance data has been generated for UV dose delivery to inactivate microorganisms Cryptosporidium & Giardia