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electric bell Features:1) Alarm of easy combustion causticity air or conductive dust 2) The surrounding temperature does not exceed 40°C3) Bear to press: 1,500V, 50 times/a minute4) Electric resistance: shouldn't be small than 10Ω5) Settle the electric voltage ±10% 6) Switch every 5 minutes7) Work time: not longer than 5 minutes8) Uninstall the bell cover to move absolutely
inch | diamter(mm) | current≤μA | powerVA | ||
SCF | 3 | 75 | 70 | 15 | |
75-300mm | 4 | 100 | 97 | 18 | |
5 | 125 | 98 | 20 | ||
6 | 150 | 100 | 22 | ||
8 | 200 | 105 | 25 | ||
10 | 250 | 125 | 30 | ||
12 | 300 | 150 | 35 |
school Electric Bell with Outside Peen