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Littelfuse is a global leader in magnetic sensing solutions with a portfolio covering reed switches, reed sensors, hall effect sensors, reed relays, and magnetic actuators. Littelfuse also offers a broad range of thermistors, resistance temperature detectors (RTDs), digital temperature indicators, and probes and assemblies for temperature sensing applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Magnetic/Reed Switches SWITCH REED MDCG-4-32-38 Littelfuse 1: $1.23 923In Stock	Mfr. Part No. MDCG-4-32-38 Mouser Part No 934-MDCG-432-38	Littelfuse	Magnetic/Reed Switches SWITCH REED Learn More about Littelfuse Hamlin MDCG 4	Datasheet	923In Stock	$1.23 $1.05 $0.972 $0.866 View $0.804 $0.759 $0.718 $0.704	Min.: 1 Mult.: 1
Magnetic/Reed Switches SWITCH REED MDRR-DT-25-30-F Littelfuse 1: $5.45 43In Stock 2,000On Order	Mfr. Part No. MDRR-DT-25-30-F Mouser Part No 934-MDRR-DT25-30F	Littelfuse	Magnetic/Reed Switches SWITCH REED Learn More about Littelfuse reed switches	Datasheet	43In Stock 2,000On Order	$5.45 $4.55 $4.21 $4.13 View $4.11 $3.91 $3.72 $3.52 Quote	Min.: 1 Mult.: 1
Magnetic/Reed Switches MDRR-DT 1156 25-30 U MDRR-DT-25-30-U Littelfuse 1: $5.71 107In Stock 1,000Expected 2027/05/20	Mfr. Part No. MDRR-DT-25-30-U Mouser Part No 934-MDRR-DT25-30U	Littelfuse	Magnetic/Reed Switches MDRR-DT 1156 25-30 U Learn More about Littelfuse reed switches	Datasheet	107In Stock 1,000Expected 2027/05/20	$5.71 $4.88 $4.57 $4.13 View $3.81 $3.71 $3.09	Min.: 1 Mult.: 1
Magnetic/Reed Switches MDSM-4B 5276 12-18 MDSM-4B-12-18 Littelfuse 1: $1.55 20In Stock	Mfr. Part No. MDSM-4B-12-18 Mouser Part No 934-MDSM-4B12-18	Littelfuse	Magnetic/Reed Switches MDSM-4B 5276 12-18 Learn More about Littelfuse reed switches	Datasheet	20In Stock	$1.55 $1.24 $1.09 $1.00 View $0.963 $0.913 $0.855 $0.816	Min.: 1 Mult.: 1
Magnetic/Reed Switches MDSM-4B 5276 32-38 MDSM-4B-32-38 Littelfuse 1: $1.40 321In Stock	Mfr. Part No. MDSM-4B-32-38 Mouser Part No 934-MDSM-4B32-38	Littelfuse	Magnetic/Reed Switches MDSM-4B 5276 32-38 Learn More about Littelfuse reed switches	Datasheet	321In Stock	$1.40 $1.10 $0.976 $0.89 View $0.855 $0.811 $0.80	Min.: 1 Mult.: 1
Magnetic/Reed Switches NO 30-35AT MDSR-10-30-35 Littelfuse 1: $1.40 971In Stock	Mfr. Part No. MDSR-10-30-35 Mouser Part No 934-MDSR-10-30-35	Littelfuse	Magnetic/Reed Switches NO 30-35AT Learn More about Littelfuse mdsr 10 reed switches	Datasheet	971In Stock	$1.40 $1.17 $1.10 $1.09 View $1.03 $0.811 $0.80	Min.: 1 Mult.: 1
Magnetic/Reed Switches MDSR-10 10-15 MDSR-10-10-15 Littelfuse 1: $1.40 1,660In Stock 1,000Expected 2026/10/26	Mfr. Part No. MDSR-10-10-15 Mouser Part No 934-MDSR-1010-15	Littelfuse	Magnetic/Reed Switches MDSR-10 10-15 Learn More about Littelfuse mdsr 10 reed switches	Datasheet	1,660In Stock 1,000Expected 2026/10/26	$1.40 $1.17 $1.10 $0.976 View $0.905 $0.904 $0.83	Min.: 1 Mult.: 1
Magnetic/Reed Switches MDSR-7 10-15 MDSR-7-10-15 Littelfuse 1: $1.35 790In Stock	Mfr. Part No. MDSR-7-10-15 Mouser Part No 934-MDSR-710-15	Littelfuse	Magnetic/Reed Switches MDSR-7 10-15 Learn More about Littelfuse reed switches	Datasheet	790In Stock	$1.35 $1.14 $1.09 $1.03 View $0.979 $0.768 $0.754	Min.: 1 Mult.: 1
Magnetic/Reed Switches SWITCH REED MDSR-7-10-20 Littelfuse 1: $0.946 837In Stock 1,000Expected 2026/10/01	Mfr. Part No. MDSR-7-10-20 Mouser Part No 934-MDSR-710-20	Littelfuse	Magnetic/Reed Switches SWITCH REED Learn More about Littelfuse sensors	Datasheet	837In Stock 1,000Expected 2026/10/01	$0.946	Min.: 1 Mult.: 1
Magnetic/Reed Switches 15.2mm Miniature Close Differential Reed Switch MLRR-3-42-48 Littelfuse 1: $1.40 1,000In Stock	Mfr. Part No. MLRR-3-42-48 Mouser Part No 934-MLRR-3-42-48	Littelfuse	Magnetic/Reed Switches 15.2mm Miniature Close Differential Reed Switch Learn More about Littelfuse sensors		1,000In Stock	$1.40 $1.19 $1.10 $0.979 View $0.908 $0.858 $0.813 $0.754	Min.: 1 Mult.: 1
Magnetic/Reed Switches MLRR-3 22-28 MLRR-3-22-28 Littelfuse 1: $1.33 936In Stock	Mfr. Part No. MLRR-3-22-28 Mouser Part No 934-MLRR-322-28	Littelfuse	Magnetic/Reed Switches MLRR-3 22-28 Learn More about Littelfuse reed switches	Datasheet	936In Stock	$1.33 $1.12 $1.04 $0.925 View $0.856 $0.811 $0.768 $0.708 $0.685	Min.: 1 Mult.: 1
Magnetic/Reed Switches MLRR-3 32-38 MLRR-3-32-38 Littelfuse 1: $1.33 221In Stock	Mfr. Part No. MLRR-3-32-38 Mouser Part No 934-MLRR-332-38	Littelfuse	Magnetic/Reed Switches MLRR-3 32-38 Learn More about Littelfuse reed switches	Datasheet	221In Stock	$1.33 $1.12 $1.04 $0.925 View $0.856 $0.811 $0.768 $0.754	Min.: 1 Mult.: 1
Magnetic/Reed Switches MLRR-4 17-23 MLRR-4-17-23 Littelfuse 1: $1.40 1,478In Stock	Mfr. Part No. MLRR-4-17-23 Mouser Part No 934-MLRR-417-23	Littelfuse	Magnetic/Reed Switches MLRR-4 17-23 Learn More about Littelfuse reed switches	Datasheet	1,478In Stock	$1.40 $1.17 $1.10 $1.00	Min.: 1 Mult.: 1
Magnetic/Reed Switches MLRR-4 17-28 MLRR-4-17-28 Littelfuse 1: $1.40 828In Stock	Mfr. Part No. MLRR-4-17-28 Mouser Part No 934-MLRR-417-28	Littelfuse	Magnetic/Reed Switches MLRR-4 17-28 Learn More about Littelfuse reed switches	Datasheet	828In Stock	$1.40 $1.17 $1.10 $0.976 View $0.905 $0.856 $0.811 $0.80	Min.: 1 Mult.: 1
Magnetic/Reed Switches SWITCH REED MLRR-4-17-38 Littelfuse 1: $1.52 518In Stock	Mfr. Part No. MLRR-4-17-38 Mouser Part No 934-MLRR-417-38	Littelfuse	Magnetic/Reed Switches SWITCH REED Learn More about Littelfuse sensors	Datasheet	518In Stock	$1.52 $1.38 $1.26 $1.15 View $1.09 $1.03 $0.83	Min.: 1 Mult.: 1
Magnetic/Reed Switches MLRR-4 22-28 MLRR-4-22-28 Littelfuse 1: $1.40 357In Stock	Mfr. Part No. MLRR-4-22-28 Mouser Part No 934-MLRR-422-28	Littelfuse	Magnetic/Reed Switches MLRR-4 22-28 Learn More about Littelfuse reed switches	Datasheet	357In Stock	$1.40 $1.17 $1.10 $0.976 View $0.905 $0.862 $0.861 $0.854	Min.: 1 Mult.: 1
Magnetic/Reed Switches MLRR-4 27-33 MLRR-4-27-33 Littelfuse 1: $1.40 701In Stock	Mfr. Part No. MLRR-4-27-33 Mouser Part No 934-MLRR-427-33	Littelfuse	Magnetic/Reed Switches MLRR-4 27-33 Learn More about Littelfuse reed switches	Datasheet	701In Stock	$1.40 $1.17 $1.10 $0.976 View $0.905 $0.856 $0.811 $0.749 $0.727	Min.: 1 Mult.: 1
Reed Relays HE751A2400 RELAY HE751A2400 Littelfuse 1: $2.81 158In Stock Factory Special Order	Mfr. Part No. HE751A2400 Mouser Part No 934-HE751A2400 Factory Special Order	Littelfuse	Reed Relays HE751A2400 RELAY Learn More about Littelfuse he700	Datasheet	158In Stock	$2.81 $2.50 $2.40 $2.31 View $2.23 $2.13 $2.05 $1.97 $1.90	Min.: 1 Mult.: 1
Proximity Sensors 59140-3-T-02-F SENS 59140-3-T-02-F Littelfuse 1: $5.54 109In Stock	Mfr. Part No. 59140-3-T-02-F Mouser Part No 934-59140-3-T-02-F	Littelfuse	Proximity Sensors 59140-3-T-02-F SENS Learn More about Littelfuse reed sensors	Datasheet	109In Stock	$5.54 $5.43 $5.23 $4.99 $4.15	Min.: 1 Mult.: 1
Level Sensors 200V 100mm AMP MTE 2.54mm 59630-1-T-01-D Littelfuse 1: $10.97 65In Stock	Mfr. Part No. 59630-1-T-01-D Mouser Part No 934-59630-1-T-01-D	Littelfuse	Level Sensors 200V 100mm AMP MTE 2.54mm Learn More about Littelfuse reed sensors	Datasheet	65In Stock	$10.97 $9.96 $9.57 $9.11 View $8.80 $8.37	Min.: 1 Mult.: 1
Magnetic/Reed Switches MDSM-DTB 15-30 MDSM-DTB-15-30 Littelfuse 1: $6.45 188In Stock	Mfr. Part No. MDSM-DTB-15-30 Mouser Part No 934-MDSM-DTB15-30	Littelfuse	Magnetic/Reed Switches MDSM-DTB 15-30 Learn More about Littelfuse sensors	Datasheet	188In Stock	$6.45 $5.49 $5.09 $4.54 View $3.52 $3.35 $3.17 $3.14	Min.: 1 Mult.: 1
Magnetic/Reed Switches NO 27-48AT MLRR-3-27-48 Littelfuse 1: $1.33 338In Stock	Mfr. Part No. MLRR-3-27-48 Mouser Part No 934-MLRR-3-27-48	Littelfuse	Magnetic/Reed Switches NO 27-48AT Learn More about Littelfuse sensors	Datasheet	338In Stock	$1.33 $1.12 $1.04 $0.925 View $0.856 $0.811 $0.768 $0.754	Min.: 1 Mult.: 1
Hall Effect / Magnetic Sensors - Industrial 3 Wire SW 1m TIN 55100-3M-05-A Littelfuse 1: $8.59 3,811On Order	Mfr. Part No. 55100-3M-05-A Mouser Part No 934-55100-3M-05-A	Littelfuse	Hall Effect / Magnetic Sensors - Industrial 3 Wire SW 1m TIN Learn More about Littelfuse Hamlin 55100 Sensor	Datasheet	3,811On Order On Order Ship Dates Mfr. No: 55100-3M-05-A Stock: 0 On Order: 711 Expected 2026/11/12 1,100 Expected 2026/11/19 2,000 Expected 2027/03/25 Factory Lead Time: 31 Weeks	$8.59 $8.16 $7.76 $7.36 $7.04	Min.: 1 Mult.: 1
Sensor Fixings & Accessories HARDWARE ACTUATOR MAGNET 57070-000 Littelfuse 1: $3.69 8,326On Order	Mfr. Part No. 57070-000 Mouser Part No 934-57070-000	Littelfuse	Sensor Fixings & Accessories HARDWARE ACTUATOR MAGNET Learn More about Littelfuse magnetic actuators	Datasheet	8,326On Order On Order Ship Dates Mfr. No: 57070-000 Stock: 0 On Order: 5,026 Expected 2026/11/23 3,300 Expected 2026/12/03 Factory Lead Time: 19 Weeks	$3.69 $3.31 $2.99 $2.85 View $2.65 $2.35 $2.24 $2.15 $2.14	Min.: 1 Mult.: 1
Sensor Fixings & Accessories HARDWARE ACTUATOR MAGNET 57125-000 Littelfuse 1: $2.38 11,623Expected 2026/11/25	Mfr. Part No. 57125-000 Mouser Part No 934-57125-000	Littelfuse	Sensor Fixings & Accessories HARDWARE ACTUATOR MAGNET Learn More about Littelfuse magnetic actuators	Datasheet	11,623Expected 2026/11/25	$2.38 $2.12 $1.91 $1.83 View $1.76 $1.60 $1.59	Min.: 1 Mult.: 1

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