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  • Product Name:

    SHF-200MM 8 inch school, factory electric bell, black cast iron electric bell

  • Categories:Products / Public broadcasting
  • Date:2020-08-10
  • Scope of application         It is suitable for industrial and mining enterprises, government organizations, public places, schools, and equipment supporting AC 50HZ circuits with voltages below 220V for ...
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1 pcs sample
85 USD
/pcs
USD
Airmail 25days

pcs
USD
/pcs
USD
Airmail 25days

Product Description

Scope of application

        It is suitable for industrial and mining enterprises, government organizations, public places, schools, and equipment supporting AC 50HZ circuits with voltages below 220V for calling or notification signals. It is also suitable for households as doorbells and alarms.

Normal working conditions

1. The altitude does not exceed 2000 meters

2. The humidity of the surrounding medium is not higher than +40 degrees and not lower than -25 degrees. The relative air temperature is not more than 90% (when the temperature is +25 degrees)

3. Use in an environment where there is no flammable and corrosive gas or conductive dust in the surrounding air without significant shaking or shock vibration.

4. It can work normally when the rated voltage is ±10%, and the continuous work is not more than 10 minutes.

5. The pollution level is level 2, and the installation category is level II.

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