- Brand: Donglan Electric
- Model: 3 inch DC12V
This product is no spark, for industrial and mining enterprises, institutions, public places schools and equipment supporting the voltage DC12V following circuit, for call or notify the signal, also applies to the family for the doorbell, alarm and so on.
Second, the normal working conditions:
1. Altitude of not more than 2000 meters
2. Ambient humidity is not higher than +40 degrees and not less than - 25 degrees relative humidity of not more than 90% (when the temperature at +25 degrees)
3. In the surrounding air, no flammable and corrosive gases or conductive dust and no significant shake and shock vibration environment.
4. Rated voltage ± 10% can work normally, continuous work is not more than 10 minutes.
5. Pollution level 2, installation category II