Features 1、Reasonable structure, small size, beautiful appearance, equipped with protective cover, power supply is more safe and reliable. 2、Complete protection function, short circuit, overload, lack of phase, undervoltage protection. 3、With EPS fire power supply interface, DC12-24V can reliably long distance double point. 4、Noiseless operation, energy saving, easy installation, simple operation and reliable performance. 5、Especially suitable for office buildings requiring fire fighting. Specification Features: Reasonable structure, small size, beautiful appearance, equipped with protective cover, power supply is more safe and reliable. Complete protection function, short circuit, overload, lack of phase, undervoltage protection. With EPS fire power supply interface, DC12-24V can reliably long distance double point. Noiseless operation, energy saving, easy installation, simple operation and reliable performance. Especially suitable for office buildings requiring fire fighting. Specifications: Model: ZGQ1M - 63/4P Input voltage: 400V EPS external indication: DC12-24V Rated current: 63 (A) Size: 21.5 x 13.5cm / 8.5 x 5.3in Weight: 1685g Wiring diagram: Package included: 1 x Automatic Transfer Switch Package List