1Made of good-quality materials, greatly improving the conductivity and service life of the product 2Built-in regular standby opening signal output port, which can be connected with signal indicator light, which is convenient for observation outside the cabinet 3Using flameretardant plastic material, possess good insulation, high temperature resistance, antiaging, safe and reliable 4When the normal power supply is abnormal, the backup power supply will work immediately to ensure the continuity, reliability and safety 5The operation mode supports automatic and manual, flexible and convenient, and very practical Item Type: Automatic Transfer Switch Material: ABS/copper Purpose: Switch to the backup power supply when the power fails, and switch to the main power supply when the power comes in Working Frequency: 50-60HZ Rated Working Voltage: 220V AC Insulation Voltage: 690V AC Impact Resistance Voltage: 8KV Operation Mode: Automatic and manual ATS: CB level Conversion Time: 0.05 (S) Number of Poles: 2P 1 x Automatic Transfer Switch 1 x User Manual Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.