Feature:1. Simpler Works: Supports both manual and auto operation as well as quick switching, which better guarantee reliable transmission.2. Good Security: When the power supply is abnormal, the backup power supply works immediately to ensure the continuity and safety.3. Practical Use: Allows for broad application in homes, shopping malls, factories, laboratories, farms and so on, very practical.4. Safer for You: Adopting flame retardant plastic with great isolation performance, also enables self switching and self return.5. Easy to Install: Specially designed for 100A AC 50Hz 60Hz, the installation of this compact transfer switch is very easy.Specification:Item Type: Transfer SwitchProduct model: NLQ4-125/2PSwitch Type: Secondary Power DistributionRated Current: 100ARated Frequency: 50Hz 60HzElectrical Grade: PC grade isolation type. .Package List:1 x Transfer SwitchNote:1. The maximum ambient temperature should not exceed 40, the minimum should not be lower than 5, and the average temperature within 24 hours should not be higher than 35.2. The altitude of the installation site should not be higher than 2000m.3. When the maximum temperature reaches 40, the relative humidity of the installation site should not exceed 50%. When the temperature is the lowest temperature of 5, the relative humidity is higher, for example, if the temperature is 25, the relative humidity is 90%. Special measures should be taken to deal with occasional condensation on product surfaces due to temperature changes.