The Trojan UV Max D4 Plus system is rated for applications from 3-14 gpm. This unit also includes an alarm reset, elapsed time meter, dry contacts, and lamp replacement meters. The Plus model incorporates a new UV intensity monitoring device for additional safety.

The Trojan UV Max E4 Plus system is rated for applications from 7-28 gpm. This unit also includes an alarm reset, elapsed time meter, dry contacts, and lamp replacement meters. The Plus model incorporates a new UV intensity monitoring device for additional safety.

The Trojan UV Max F4 Plus system is rated for applications from 13-47 gpm. This unit also includes an alarm reset, elapsed time meter, dry contacts, and lamp replacement meters. The Plus model incorporates a new UV intensity monitoring device for additional safety.