|[Electronic and Electrical] - [Fire alarm]|
Stainless steel outer ring SCF-250 MM 10-inch | No spark | School home doorbell 220v
1. Scope of application
This product is no spark, for industrial and mining enterprises, organizations, public places schools and equipment supporting the AC 50HZ, the voltage to 220V the following circuit, for call or notification signal, also applies to the family for the doorbell, alarm And so on.
1. High-quality bell hammer: stainless steel, better anti-rust effect, longer service life;
2. Double coil: double-coil within the suction, durable, stable performance;
3. Beautiful ring tones: professional people know the sound of cast iron bells crisp, loud, wide dissemination of efforts;
4. Convenient installation: cover with three holes designed to facilitate the installation of the bell on the wall.
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 of the environment.
4. Rated voltage ± 10% can work normally, continuous work is not more than 10 minutes.
5. Pollution level 2, installation category II