SIPLUS G120 CU240E-2 USS Control Unit CU240E-2 USS -20...+55 C with conformal coating BasedOn 6SL3244-0BB12-1BA1 . Control Unit CU240E-2 Type with Safety integrated STO RS485 interface. USS protocol 6DI. 3 DO. 2AI.2AO. max. 1F-DI PTC/KTY interface USB and SD/MMC interface Degree of protection IP20 without Power Module