The dual power automatic switch is a newly developed miniature household power switch, which is mainly used to test whether the main power supply or standby power supply is normal. When the normal power supply is abnormal, the standby power supply starts to work immediately, which ensures the continuity, reliability and safety of power supply. This product is specially designed for household rail instailation and is specially used for PZ30 distribution box. The dual power automatic switch is suitable for emergency power supply systems with 50 or 60Hz and rated(L+N) 230VAC.ATS has the characteristics of solid structure. reliable conversion, convenient installation and maintenance and long service life. It is widely used in various occasions where power failure cannot be sustained, and can be operated by electricity or manually.ATS is composed of TSE and controller. Normal operation time and installation conditions Ambient air temperature:The maximum temperature shall not exceed 40℃, the minimum temperature shall not be lower than -5℃, and the average temperature within 24 hours shall not be higher than 35℃. Altitude:The altitude of the installation site should not be higher than 2000m. Specification:4P Color: White Material: Plastic+Electronic Component Package Contents: 1 x Power Automatic Transfer