Significant factors include regulation of linevoltage, temperature of the room in which the device operates, temperature control, and condition and age of the lamps.
主要的因素包括：线路电压的调节、设备房间室温、控制的温度、条件以及灯的寿命。
2
The power of this monitoring device is made up of novel switch voltageregulation circuit and linear voltageregulation circuit, the electricity of which is directly supplied by high voltageline.