High Quality: The transfer switch is made of high-quality flame-retardant plastic material, providing good insulation, high temperature resistance, anti-aging properties, and ensuring safe and reliable operation. Easy to Use: The changeover switch features a built-in standard standby opening signal output port that can be connected to a signal indicator light, allowing for convenient external observation. Continuous Supply: When the main power supply is interrupted, the backup power supply automatically engages to ensure continuous, reliable, and safe power delivery. Practical Design: The electronic circuit breaker allows switching to the backup supply when the main power is cut off, and returns to the main supply when power is restored. Dual switch design. PC level, switching time less than 8ms, no interruption. Suitable for city power and generator applications only, not compatible with PV systems or inverters. Style: 63A Color: White Material: Plastic + Metal Size: 105 x 104 x 75.5mm Package Contents: 1 x Dual Switch Note: Light reflection and different display settings may cause slight color variations between the item in the picture and the actual product. Measurement error allowed is +/- 1-3cm.