Normal working conditions and installation conditions
1 The ambient air temperature is: -5℃~+40℃, and the average value within 24 hours does not exceed +35℃.
2 Altitude: not more than 2000m.
3 Atmospheric conditions: when the highest temperature is +40℃, the relative humidity of the air does not exceed 50%, and it can be used at lower temperatures
Higher relative humidity is allowed, such as 90% at +20°C. The occasional condensation due to temperature changes should be taken
4 Pollution degree: Level 3.
5 Installation category: Class Ⅱ.
6 The button should be installed in a place where there is no significant shaking, shock and vibration, and no rain or snow.
7 The button should be installed in a medium without explosion hazard, and there is no gas and dust in the medium that can corrode metals and damage insulation.
8 The button should be installed in the round hole of the control board, and the round hole can have a keyway to prevent rotation.
The dimensions of the mounting hole and keyway are shown in Figure 1. The standard position of the keyway (if any) is the upright position (12 o'clock).