工作电压范围宽，电网适应能力强。
Wide work voltage range, strong ability in adapting power grid.
该电路的工作电压范围宽，可以显示接收信号强度。
This system can indicate the received signal strength, and its operation voltage can be adjusted in very wide range.
工作电压范围宽。系统可用于交流150-280V电压下长时间可靠运行，可适应恶劣的供电环境。
Working voltage range breadth, the system is more available than to communicate a 150-280 V the voltage is down long-term firm run - time, can adapt to bad power supply environment.
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