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Undervoltage detection

Hi Sir/Madam,

Is there any IC available to monitor Mains voltage (230VAC)?

My application is to detect lower voltage level. Say for example, 200VAC is the lower voltage. If the monitor IC detects the voltage level as 200VAC, then it will send signal.

By using this signal, i can turn off my appliances through external MOSFET.

Also the lower voltage level should set by external resistor. That means, the lower voltage level shall be programmed through that external resistors.

Please suggest your solutions.