Feature:1. [Uninterrupted Power Supply] This dual power transfer switch seamlessly switches between two power sources, ensuring a continuous supply of electricity.2. [Fast Switching Speed] This automatic transfer switch supports both automatic and manual operation, with millisecond switching speed, ensuring a quick and smoothly power transfer.3. [Premium Materials] Made from PC flame resistant material with silver alloy contacts, this power transfer switch has excellent insulation, high temperature resistance, and anti aging properties for enhanced durability.4. [Stable Performance] This ATS features reliable self casting and self resetting capabilities, ensuring stable performance for a worry free user experience.5. [Wide Application] This dual power transfer switch is suitable for emergency power supply systems with a rated AC voltage of 100A at 50 or 60Hz, versatile and practical.Specification:Item Type: Dual Power Automatic Transfer SwitchMaterial: PC Flame Retardant, Silver AlloyModel: NLQ3 125 4PSwitch Type: Secondary DistributionRated Current: 100ARated Frequency: 50Hz 60HzElectrical Level: PC IsolationAuxiliary Circuit: Two Relays, each with two groups of contacts capacity: AC110V 50HZ le=5yTouch Time: <50msOperation Switching Time: <50msReturn Time: <50msShutdown Time: <50ms.Package List:1 x Dual Power Automatic Transfer Switch1 x Instruction ManualNote:1. The maximum ambient temperature should not exceed 40, and the minimum should not be lower than 5. The average temperature within 24 hours should not be higher than 35.2. The installation location should not have an altitude 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 at its lowest of 5, the relative humidity can be higher. For example, at a temperature of 25, the relative humidity can be 90%. Due to temperature changes, special measures should be taken to handle occasional condensation on the surface of the product.