The Sentry 20V2T is a siren manufactured by Sentry Siren.
The 20V2T puts out 125 decibels of sound. Its motor is rated at 20 hp. This siren is available in either single-phase or 3-phase configuration.
The 20V2T puts out a 920Hz tone and a 460Hz tone.
The 20V2T is electromechanical and stationary.