Telephone ringer amplifier
Easy to install (under a minute)
Extra loud ringer (95 dB)
Volume control (Hi/Low)
Visual ringer indicator
No battery needed
Connected directly to the telephone line
Flashing light is not bright enough compare to telephone flashing light.
If you are living in a home then it will be nice for you to purchase it.
If you are living in a flat or close to neighbour then you need to be careful buying this product because it is very loud.It would disturb your neighbour.
It would be nice to use for factory / warehouse.