By the way, TVs, microwave ovens, washing machines, etc. are home electric appliances that can be unplugged when not in use. What happens to the fax machines with telephones, which are ranked fourth in the order of standby electricity consumption, if they are plugged out?　It can be divided into the following two types.

1. Can be used as a phone, but not as a fax.

2. Cannot be used either as a telephone or as a fax.

In any case, if the telephone with fax is unplugged, the fax function will become "a waste".

⇒ Is there a good way to use the fax phones while saving power by unplugging them?

Using Setsuden-mushi (a profit-making device) is a concrete method to answer such problems and questions. The problem can be solved by connecting Setsuden-mushi to the fax with telephone. However, there is one problem that cannot be solved. That is that you will not be able to make calls from the cordless handset of a fax machine with telephone. Outgoing calls from the handset become impossible. (There is no problem in incoming calls using the handset.)

Since the power of the main unit of the fax machine is turned off by Setsuden-mushi, the signal from the handset unit can’t be received by the main unit. This problem is fatal considering that 90% of the intended use of a fax with a telephone is a telephone call, and at least half of that, 45%, is an outgoing call from a handset. I'm very sorry, but I can't solve this problem. It is necessary for the fax machine manufacturer to provide another circuit for exchanging signals between the handset and base unit.

Setsuden-mushi standing-by when the fax with telephone is unplugged automatically turns on only when there is a telephone or fax call, and after 5 minutes from the completion of the call or reception of the fax message, it automatically and reliably saves power by returning the fax machines to the unplugged state.

With this Setsuden-mushi connection method, the energy consumption during standby of a fax machine or copier that can be saved is 60 million kWh annually in Japan (home, factory, office). It's by no means a small number.