Venstar VST2300FS Prog Thermostat Refrigerant This unit serves as the

This unit serves as the direct replacement for Berko 3900-2011-000

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This model is technically identical to the SEC99AA-60C

Wide Operating Range: Adjustable set points from 0

Venstar VST2300FS Prog Thermostat Refrigerant This unit serves as theThe Venstar VST2300FS is a professional grade, 7 day programmable thermostat engineered for 2 heat and 2 cool stages. As the direct field replacement for the 33CS250 FS and P374 1000FM, this unit integrates seamlessly into existing footprints while providing upgraded logic for HVAC energy management. Designed for reliability in demanding environments, it features a backlit display for low light mechanical rooms and non volatile memory to retain