Voltage monitoring device

The embodiment of the utility model provides a voltage monitoring device, and belongs to the field of voltage monitoring equipment. The voltage monitoring device comprises a display screen, a processor, a low-power-consumption CPU, a main wireless communication module, a standby wireless communication module and a voltage measuring circuit. The display screen, the main wireless communication module, the standby wireless communication module and the voltage measuring circuit are electrically connected with the processor. And the low-power-consumption CPU is electrically connected with the processor. The voltage monitoring device provided by the utility model has a dual-wireless communication function, so that when one wireless communication module fails, the other wireless communication module can immediately start the communication function, so that when the wireless communication module fails, a worker does not need to timely arrive at a site to replace the whole equipment, manpower and material resources ar