The third generation of siren controller from Sentry Siren is aptly named the Gen-3. The product of decades of experience and countless hours of R&D, the Generation 3 is our flagship siren controller. Ease of use was pinnacle when designing the timing functions of the Gen-3. This siren controller can be ordered utilizing DTMF and/or 2 Tone Sequential communication methods and operates on VHF, UHF, Low Band, 900MHz, Narrow or Wide Band. If the user doesn’t like the current on/off time the siren performs, a few simple button pushes will allow infinite adjustment. There is just no need to pay for a technician to make such simple adjustments. The Gen-3 comes completely programmed from the factory, so when the user installs the controller, it’s ready to go.