Silent Sentry - MCS2080V refrigeration, battery backup system: 2000 watts, 2KW UPS. Ability to provide 25 hours of back-up power to Infinity Refrigeration - 8.1 amps, 115 volts, mobile with wheels, Pl... Silent Sentry - MCS2080V refrigeration, battery backup system: 2000 watts, 2KW UPS. Ability to provide 25 hours of back-up power to Infinity Refrigeration - 8.1 amps, 115 volts, mobile with wheels, Plug and play with 3 standard wall outlets and a standard Amp Input Circuit .