Optosensor 9865-1

2 entries, grouped by color then part type, the way you'd sort the pile. Every part links to its own page so you can compare seller prices.

	Qty	Type	Part	Ref
Black · 1 pcs
	1×	Electronics	Sensor, Light, 4.5V	upn0178
White · 1 pcs
	1×	Technic Special	Technic Disc 3 x 3 with 4 Black Sections on One Side and 8 on Reverse Print [Speed Sensor]	2723pr0005