Thermo Scientific CO2 Backup System (Built-in, factory installed)

Backup Systems inject liquid CO2 on-demand when cabinet temperature warms to a pre-set level. Liquid flow is shut off automatically when the freezer door or lid is opened. Activation setpoints are adjustable in 1°C increments, to -75°C. The control module digital display shows actual temperature when button is pushed. An indicator light glows when activated. The system operates on a continually recharged battery, and includes all hardware except the supply cylinder.