OPTEK Technology Inc. —

1645 Wallace Drive, Carrollton, Texas 75006

Phone: (972) 323-2200 or (800) 341-4747

FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com

Issue A.1

11/08

Page 5 of 6

OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.

Slotted Optical Switch

OPB420AZ & OPB420BZ

Typical Output Current Vs Distance (Y-Axis Blocked)

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0.00

0.10

0.20

0.30

0.40

0.50

0.60

Blocking Distance - Inches

Flag at

0.4"

Flag at

0.2"

Flag at

0.0"

X-Flag Direction

Y-Flag Direction

Typical Output Current Vs Distance X-Axis Blocked

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

Blocking Distance - inches

Flag at

0.00

Flag at

0.15

Flag at

0.30