Feature: 1. Built in switch signal output port, can be connected to the signal indicator light, easy to observe outside the cabinet. Number of Poles: 4P. When the maximum temperature reaches 40℃, the relative humidity of the installation site should not exceed 50%; when the temperature is the lowest temperature of ‑5℃, the relative humidity is higher, for example, if the temperature is 25℃, the relative humidity is 90%.
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