![Technic Disc 3 x 3 with 4 Black Sections on One Side and 8 on Reverse Print [Speed Sensor]](https://cdn.rebrickable.com/media/parts/photos/15/2723pr01-15-c6fd6939-2037-4995-9a3f-f6d69c867391.jpg)
LEGO part #2723pr0005
Technic Disc 3 x 3 with 4 Black Sections on One Side and 8 on Reverse Print [Speed Sensor]
Sets
5
Total quantity
8
Distinct colors
1
Sets that include this part
#9865-1
· Educational and Dacta
· 1992
Optosensor
1× in set
#9700-1
· Technic
· 1987
Technic Control Center
1× in set
#1343-1
· Technic
· 1986
Optosensors (4.5V) and Discs
2× in set
#1092-1
· Technic
· 1986
TECHNIC Control II
2× in set
#1090-1
· Technic
· 1986
TECHNIC Control I
2× in set