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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
Optical Switches, Reflective, Phototransistor Output Reflective Sensor OPB743WZ Optek / TT Electronics 1: £3.40 448In Stock	Mfr. Part No. OPB743WZ Mouser Part No 828-OPB743WZ	Optek / TT Electronics	Optical Switches, Reflective, Phototransistor Output Reflective Sensor	Datasheet	448In Stock	£3.40 £3.24	Min.: 1 Mult.: 1
Optical Switches, Reflective, Phototransistor Output EMMITER/SENSOR ASSEM OPB745 Optek / TT Electronics 1: £2.51 1,194In Stock 1,000Expected 27/01/2027	Mfr. Part No. OPB745 Mouser Part No 828-OPB745	Optek / TT Electronics	Optical Switches, Reflective, Phototransistor Output EMMITER/SENSOR ASSEM	Datasheet	1,194In Stock 1,000Expected 27/01/2027	£2.51 £2.44	Min.: 1 Mult.: 1
Optical Switches, Reflective, Phototransistor Output Reflective Sensor OPB745WZ Optek / TT Electronics 1: £3.81 390In Stock	Mfr. Part No. OPB745WZ Mouser Part No 828-OPB745WZ	Optek / TT Electronics	Optical Switches, Reflective, Phototransistor Output Reflective Sensor	Datasheet	390In Stock	£3.81 £3.62	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Wide Gap Opt Switch OPB800L51 Optek / TT Electronics 1: £2.26 549In Stock	Mfr. Part No. OPB800L51 Mouser Part No 828-OPB800L51	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Wide Gap Opt Switch	Datasheet	549In Stock	£2.26 £2.15	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Wide Gap Opt Switch OPB800W51Z Optek / TT Electronics 1: £3.82 892In Stock 1,400Expected 15/02/2027	Mfr. Part No. OPB800W51Z Mouser Part No 828-OPB800W51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Wide Gap Opt Switch Learn More about Optek / TT Electronics optek tt opb800 w switches	Datasheet	892In Stock 1,400Expected 15/02/2027	£3.82 £3.62	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output .16in SLOT INFRARED OPB804 Optek / TT Electronics 1: £1.37 1,062In Stock	Mfr. Part No. OPB804 Mouser Part No 828-OPB804	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output .16in SLOT INFRARED	Datasheet	1,062In Stock	£1.37 £1.34 Quote Quote	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output .375" WIDE GAP 890NM OPB810L51 Optek / TT Electronics 1: £2.24 466In Stock 400Expected 27/10/2026	Mfr. Part No. OPB810L51 Mouser Part No 828-OPB810L51	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output .375" WIDE GAP 890NM	Datasheet	466In Stock 400Expected 27/10/2026	£2.24 £2.14	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Wd Gap Opt Switch OPB811W55Z Optek / TT Electronics 1: £3.47 1,322In Stock 1,800Expected 11/12/2026	Mfr. Part No. OPB811W55Z Mouser Part No 828-OPB811W55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Wd Gap Opt Switch Learn More about Optek / TT Electronics optek tt opb800 w switches	Datasheet	1,322In Stock 1,800Expected 11/12/2026	£3.47 £3.40	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output .375" SLOT OPAQUE WIRE LEADS OPB812W55Z Optek / TT Electronics 1: £3.78 509In Stock	Mfr. Part No. OPB812W55Z Mouser Part No 828-OPB812W55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output .375" SLOT OPAQUE WIRE LEADS Learn More about Optek / TT Electronics optek tt opb800 w switches	Datasheet	509In Stock	£3.78 £3.59	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output .21in SLOT INFRARED OPB818 Optek / TT Electronics 1: £1.91 698In Stock	Mfr. Part No. OPB818 Mouser Part No 828-OPB818	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output .21in SLOT INFRARED	Datasheet	698In Stock	£1.91 £1.90	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB821S3Z Optek / TT Electronics 1: £4.37 340In Stock	Mfr. Part No. OPB821S3Z Mouser Part No 828-OPB821S3Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	340In Stock	£4.37 £4.16	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output SLOTTED SWITCH OPB821Z Optek / TT Electronics 1: £4.32 322In Stock	Mfr. Part No. OPB821Z Mouser Part No 828-OPB821Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output SLOTTED SWITCH	Datasheet	322In Stock	£4.32 £4.16	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Dual Channel OPB826S Optek / TT Electronics 1: £5.69 169In Stock	Mfr. Part No. OPB826S Mouser Part No 828-OPB826S	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Dual Channel	Datasheet	169In Stock	£5.69 £5.50	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB829AZ Optek / TT Electronics 1: £3.25 732In Stock 1,200Expected 10/02/2027	Mfr. Part No. OPB829AZ Mouser Part No 828-OPB829AZ	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	732In Stock 1,200Expected 10/02/2027	£3.25 £3.13	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB830L11 Optek / TT Electronics 1: £2.74 684In Stock 1,200On Order	Mfr. Part No. OPB830L11 Mouser Part No 828-OPB830L11	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	684In Stock 1,200On Order On Order Ship Dates Mfr. No: OPB830L11 Stock: 684 Can Dispatch Immediately On Order: 400 Pending 800 Expected 16/12/2026 Factory Lead Time: 19 Weeks	£2.74 £2.58	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB830W11Z Optek / TT Electronics 1: £4.35 1,403In Stock 1,800Expected 27/11/2026	Mfr. Part No. OPB830W11Z Mouser Part No 828-OPB830W11Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	1,403In Stock 1,800Expected 27/11/2026	£4.35 £4.28	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB830W51Z Optek / TT Electronics 1: £4.09 570In Stock	Mfr. Part No. OPB830W51Z Mouser Part No 828-OPB830W51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	570In Stock	£4.09 £4.07 £3.95	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB840L55 Optek / TT Electronics 1: £2.31 494In Stock	Mfr. Part No. OPB840L55 Mouser Part No 828-OPB840L55	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	494In Stock	£2.31 £2.18	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB840W51Z Optek / TT Electronics 1: £3.99 287In Stock 600Expected 29/12/2026	Mfr. Part No. OPB840W51Z Mouser Part No 828-OPB840W51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	287In Stock 600Expected 29/12/2026	£3.99 £3.77	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB840W55Z Optek / TT Electronics 1: £3.66 703In Stock	Mfr. Part No. OPB840W55Z Mouser Part No 828-OPB840W55Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	703In Stock	£3.66	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB842W51Z Optek / TT Electronics 1: £3.48 1,563In Stock	Mfr. Part No. OPB842W51Z Mouser Part No 828-OPB842W51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	1,563In Stock	£3.48 £3.33	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Output Phototranstr Input Diode OPB855 Optek / TT Electronics 1: £1.68 1,103In Stock 3,000Expected 23/12/2026	Mfr. Part No. OPB855 Mouser Part No 828-OPB855	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Output Phototranstr Input Diode	Datasheet	1,103In Stock 3,000Expected 23/12/2026	£1.68 £1.62 Quote Quote	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB866T55 Optek / TT Electronics 1: £2.30 988In Stock 3,000Expected 07/12/2026	Mfr. Part No. OPB866T55 Mouser Part No 828-OPB866T55	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch	Datasheet	988In Stock 3,000Expected 07/12/2026	£2.30 £2.14	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch OPB880L51Z Optek / TT Electronics 1: £3.78 416In Stock	Mfr. Part No. OPB880L51Z Mouser Part No 828-OPB880L51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output Slotted Opt Switch Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	416In Stock	£3.78 £3.49	Min.: 1 Mult.: 1
Optical Switches, Transmissive, Phototransistor Output SLT 880 PHOTO TRAN OPB880T51Z Optek / TT Electronics 1: £3.78 1,929In Stock	Mfr. Part No. OPB880T51Z Mouser Part No 828-OPB880T51Z	Optek / TT Electronics	Optical Switches, Transmissive, Phototransistor Output SLT 880 PHOTO TRAN Learn More about Optek / TT Electronics optek tt opb88 89z switches	Datasheet	1,929In Stock	£3.78 £3.77 £3.72 £3.62 £3.55	Min.: 1 Mult.: 1

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