Thumbwheel Switch
A7PS/A7PH
CSM_A7PS/A7PH_DS_E_6_1
Dust-tight, Easy-to-Use,
Push-operated Switches with Large
Display Characters
• Simple push mechanism and large, easy-to-view numeric display
make setting easy.
• Dust penetration prevented with seal for the display windows.
Ordering Information
Switches (Single Switch Units)
Model
A7PS
A7PH
Snap-in
(front mounting)
Snap-in
(front mounting)
Classification
(See note 1.)
Long-life type
Character height
Terminals
Color
Decimal: 6.8 mm Hexadecimal: 4.0 mm
Solder terminals
Light gray
Black
Light gray
Black
Output code number
03 (decimal code)
Model
A7PS-203
A7PS-206
A7PS-203-1
A7PS-206-1
A7PH-203
A7PH-206
A7PH-203-1
A7PH-206-1
06 (binary coded decimal)
07 (binary coded decimal, with component-
adding provision) *1
A7PS-207
A7PS-207-1
A7PH-207
A7PH-207-1
19 (decimal code, with component-adding
provision)
A7PS-219
A7PS-254
A7PS-255
A7PS-219-1
A7PS-254-1
A7PS-255-1
---
A7PH-254
---
---
A7PH-254-1
---
54 (binary coded hexadecimal)
55 (binary coded hexadecimal, with compo-
nent adding provision) *1
Note: 1. The classification diagrams show 4 Switch Units combined with End Caps to create 4-digit displays.
2. The model numbers given above are for 1 Switch Unit.
3. Models with stoppers are also available. Add “-S@@” after the “203,” “206,” “207,” “219,” “254,” or “255” in the model number and specify the display range in
the @@. For example, to specify the range 0 to 6, add “-S06” to the model number (e.g., A7PS-206-S06-1).
“-SOF” can not be available for type -254, -255.
4. Models with +, - displays can also be produced. Add “-PM” after the “206” in the model number (e.g., A7PS-206-PM or A7PS-206-PM-1)
*1. Models with diodes are available. Add “-D” to the model number (e.g., A7PS-207-D or A7PS-207-D-1).
End Caps
Accessories (Order Separately)
Use accessories, such as End Caps and Spacers, with the Switch
Units.
End Caps are used on the Switch Units at each end and allow all the
Switch Units to be securely mounted to a panel. They come in pairs,
one for the left and one for the right.
Accessory
End Caps
Color
Light gray
A7P-M
Black
Spacers
A7P-M-1
A7P-P@
A7P-P@-1
• Spacers are used for creating extra space or gaps between the
Switch Units and have the same dimensions as the Switch Units
themselves.
• There are also Spacers with engraved characters or symbols that
can be used for indicating units, such as time and length. (Refer to
the following table.) Consult your OMRON representative for
details.
Spacer
(See note.)
(See note.)
NRT-C
Solder terminals
PCB terminals
Connec-
tors
NRT-CN
NRT-CP
Note: The @ in the Spacer model number stands for a letter in the range A to
U. (Refer to the table in the following explanation about Spacers.)
Symbol
Stamp
A
B
C
D
E
F
G
No des-
ignation
SEC
MIN
H
g
kg
mm
Symbol
Stamp
H
J
K
L
Q
T
U
x 10
SEC
cm
m
°C
PCS
0
•
1