Always connect to a ground of 100 Ω or less when installing the product. Not connecting to aground of 100 Ω or less may result in electric shock.Install external breakers and take other safety measures against short-circuiting in external wiring.Insufficient safety measures against short-circuiting may result in burning.Connect communications lines using the specified cables. Using other cables may result inmalfunction.Keep within the specified ranges when performing wiring for communications. Incorrect wiring mayresult in burning.Perform wiring correctly, in the way described in this document and in relevant manuals. Incorrectwiring may result in burning.Always use the power supply voltage specified in the relevant manuals. An incorrect voltage mayresult in malfunction or burning.