Toa N-8000 Series - Manual (Page 356)

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Chapter 3 INSTALLATION & WIRING
YC-302 or electrical box
Machine screw M4 x 25
(supplied with the RS-141/191/481)
Option handset
Note: This figure represents the RS-191.
Wall surface
12. INSTALLATION Of OPTION hANDSeT
Option handset RS-141/191/481 can be installed in a wall.
Mount the option handset to the YC-302 or electrical box mounted in the wall.
Accessory screws
The RS-141/191/481 comes with 2 types of screws: M4 x 25 and UNC No. 6-32 x 18.
For the electrical box provided with unified threads, use the UNC No. 6-32 x 18.