Features:
1) Alarm of easy combustion causticity air or conductive dust
2) The surrounding temperature does not exceed 40°C
3) Bear to press: 1,500V, 50 times/min
4) Electric resistance: shouldn't be small than 10Ω
5) Settle the electric voltage ±10%
6) Switch every 5 minutes
7) Work time: not longer than 5 minutes
8) Uninstall the bell cover to move absolutely

Inch                  Dia (mm)                   Current(≤mA)                 Power(VA)

2                         55                                50                                  8

3                         75                               80                                  10

4                       100                                97                                 22

6                        150                              100                                25

8                       200                                105                               25

10                     250                                125                               30

12                     300                                150                               35