8-Inch 120dB 220V School Bell Electric Bell with Timer Bell with Remote Switch.

8 Inch Stainless Steel 220V External strike Electric Bell with Automatic Bell Controller School bells Alarm BellPrecautions: The optimal ringing time for electronic bells is 30 seconds to 40 seconds, and the duration of a single ringing time cannot exceed 60 seconds, otherwise it is easy to burn out. Features:1. Non-sparking bell, stainless steel material, provides clear and loud sound.2. Widely used, applicable to industrial and mining enterprises, organizations, public places schools for calling or notification signals, also applicable to the family doorbell, alarm and other use.3. Pure copper electric coil, with intermittent, no electromagnetic interference, powerful striking, stable performance and long service life.4. High quality stainless steel shell, sturdy, not easy to deform, antirust and durable.5. Simple installation, no need complicated tools, convenient for using.6. Application: Applicable to industrial and mining enterprises, organizations, public places schools for calling or notification signals, also applicable to the family doorbell, alarm and other use.Technical Parameters of the bell:Product Name: External strike Electric Bell Main Material: Stainless SteelColor: As picture shownPower Mode: Wired, 220V 50/60 HzSwitching Capacity: Resistive 10AFeature: No SparksRinging Time: ≤ 60 secondsSound Distance: 8 inch for ≤ 1000㎡Size: 8 inch (200MM)Technical Parameters of the controller:Product Name: Microcomputer Bell ControllerWorking Voltage: 220VContact Capacity: 30A 250VAC (resistive)Number of scheduled Groups: 10 GroupsControl Current: 30AElectrical Power: ＜ 3WMemory Method: Power off MemorySize: 1207450mmController Weight: 0.31KGPackage List:1 x Electric Bell1 x Bell Controller