1Excellent PC Flame Retardant Plastic: This dual power automatic transfer switch is made of excellent PC flame retardant plastic, with good insulation, high temperature resistance, anti aging, safety and reliability. 22 Operation Modes: This dual power toggle controller has 2 operation modes, it can be operated automatically or manually, milliseconds switching without power supply, compact structure, reliable transmission. 335mm Standard DIN Rail Mounting: This automatic transfer changeover switch adopts 35mm standard DIN rail mounting, which is very convenient for installation. 4Fast Switching: This mini ATS automatic transfer switch when the normal power supply is abnormal, the backup power supply immediately work, millisecond switching to achieve the effect of uninterrupted power supply, to ensure the continuity, reliability and safety of the power supply. 5Wide Application: This dual power generator changeover switch has a wide range of applications and can be used in factories, shopping malls, nurseries and other places. 1 x Dual Power Automatic Transfer Switch 2 x Protective Covers 1 x Accessory 1 x Manual