| For | Liquid | Narrow | SKU | Price | 
|---|---|---|---|---|
| Premium U410, U410 HEF; CryoCube F570, FC660 | LN2 back-up system | No | EPP:U9044-0006 | 
                       
                        $2,504
                       
                     | 
                  
                
| Innova U101, U360, U535, U725, U725-G, C585, C760; CryoCube F740 | CO2 back-up system | Yes | EPP:U9043-0002 | 
                       
                        $2,504
                       
                     | 
                  
                
| Premium U410, U410 HEF; CryoCube F570, FC660 | CO2 back-up system | No | EPP:U9043-0006 | 
                       
                        $2,504
                       
                     | 
                  
                
| Innova U101, U360, U535, U725, U725-G, C585, C760; CryoCube F740 | LN2 back-up system | Yes | EPP:U9044-0002 | 
                       
                        $2,504
                       
                     | 
                  
                
Loss of power is no problem with back-up systems, which are designed to maintain the contents of your freezer at a preset temperature should a power outage arise.
Freatures:
| Power supply | 120 – 220 V, 60 Hz | 
|---|---|
| backup battery | YES | 
| – | – | – | – | |
|---|---|---|---|---|
| Power supply | 120 – 220 V, 60 Hz | 120 – 220 V, 60 Hz | 120 – 220 V, 60 Hz | 120 – 220 V, 60 Hz |