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Voltage control relay F&F CP-721-1 1 pc. Review




Revainrating 4 out of 5  
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Description of Voltage control relay F&F CP-721-1 1 pc.

The CP-721-1 voltage monitoring relay is designed to protect electrical installations, electrical appliances and other electronic equipment from overvoltage or undervoltage, register voltage limits, as well as the type of accident that has occurred, and control the voltage in a single-phase AC supply network. Protection is carried out by disconnecting the load from the power supply.


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Type of review

Revainrating 5 out of 5

Best I have ever used, great product for anyone!

Pros: The voltage control relay fully lived up to expectations. The device is easy to install. The cost is acceptable. Wide range of boundary stresses. Cons below: It is difficult to understand the setting, but this is not important, since you set the range once when connecting.

Revainrating 2 out of 5

Not a good product, sorry to have spent money on it.

the relay periodically turns off due to overvoltage. history always saves 276 volts. it cannot be that power surges consistently gave 276 volts. enumeration of voltage and time settings does not help. off about once a week or two. Through technical support I was able to replace the relay with another one. he has the same problem. It's been out twice in a week

Revainrating 5 out of 5

A great option for this money, I definitely recommend it!

It showed itself after installation on the very first day, it worked to increase the voltage at standard settings (out of habit, I didn’t immediately understand what happened). Satisfied. ps more on the channel "Electrician's Notes"

Revainrating 2 out of 5

Product is not reliable, not worth buying.

Never, ever buy this relay. Not only does it not work with shutdown delays, but also the technical support is disgusting, there is a boor in the engineering service who confidently declares that their device is perfect, and all the problems are in the rest of the electrics.

  • Compact size, only 2 modules
  • Regular unreasonable shutdown. I turn off 2-3 times a day with a ULo error, as it were, due to low voltage, set a delay to turn off 5 seconds, everything turns off smoothly. There is no low voltage in the network. It is also inconvenient to press two small buttons at the same time to control.