| 出生地 |
Zhejiang China (Mainland) |
| 牌子的名字 |
Great Wall Electroacoustics |
| 模式的数量 |
uc4 |
electric bellFeatures: 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/a minute 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