Reed Switch Developments, 2250-1051-100, Reed Switch/Sensor, Plastic, SPST - Form A, 15W 200V 1A, Qty: 1, Black

$7.89

Hilitand Magnetic Sensor Reed Switch for Cylinder CS1-U Magnetic Air Pneumatic Cylinder NO Magnetic Reed Switch Sensor DC AC 5V- 240V

$30.99

QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws

$19.79

BokWin 5 Pcs Mico Magnetic Reed Switch Magnetic Door Window Sensor Switch Magnetic Contact Switch (Normally Close)

$7.89

CZMAG Magnets Reed Switch,10pcs Plastic Contact Normally Closed Magnetic Reed Switch Drop-Proof and Anti-Interference(N/C)

$8.99

PATIKIL Magnetic Reed Switch, 10 Pack NC Wired Recessed Door Sensor Window Contact Switch for Alarm System, Black

$9.99

Magnetic Reed Switch MC-32 NC Surface Mount Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White - (6 Sets)

$7.59

bnafes MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch 2 Sets

$14.99

Reed Switch Developments, 2100-1091-400, Reed Switch/Sensor + Actuator Kit, Plastic, SPST - Form A, 10W 170V 0.5A, Qty: 1 Kit, Black

$7.99

Hxchen MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch - (5 Sets)

$17.59

GDQLCNXB 2 Sets MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch

$12.99

BNYZWOT MC-31 Surface Mount Wired NC Door Contact Sensor Alarm Magnetic Reed Switch White 10pcs

$15.59

VictorsHome Magnetic Reed Switch NC NO COM Surface Mount Wired Door Window Contact Sensor with Cover for Home Security and Burglar Alarm Systems MC-31 5pcs

$7.99

BNYZWOT MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White 10 Pair

$11.99

Dairzitv MC-31 Surface Mount Wired NC Door Contact Sensor Alarm Magnetic Reed Switch White 5 Pair

$7.59

Approach Sensor Proximity Switch Inductive Sensor Small Magnetic Metal Long Shell DC 0-35V Normally Open

$22.99

weideer 2pcs MC-31B Magnetic Reed Switch Wired Surface Mount Normally Open Closed NC NO Door Contact Sensor Alarm Magnetic Door Switch Black

$14.94

Dairzitv MC-31 Surface Mount Wired NC Door Contact Sensor Alarm Magnetic Reed Switch White 10pcs

$15.69

PATIKIL Magnetic Reed Switch, 4 Pack NO Wired Surface-Mounted Magnetic Contact Switch for Door Window, Black

$7.99

Magnetic Reed Switch MC-31 NC Surface Mount Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch,Sets of 2

$9.99

Magnetic Reed Switch MC-32 NC Surface Mount Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch,Sets of 2

$14.94

Gebildet 30pcs Reed Switch, Normally Open (N/O) Magnetic Induction Switch, Miniature Reed Contact (2mm x 14mm)

$16.99

Augiimor 2PCS RC-35 NC & NO Wired Magnetic Door Window Contact Sensor Security Alarm Door Window Contact Sensor Magnetic Reed Switch (White)

$7.99

MC-32 NC Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White (5 Sets)

$21.99

Magnetic Reed Switch,Normally Closed NC Waterproof Magnetic Switch,Micro Alarm Reed Switch 10W 100v 0.5A Magnetic Door Sensor Switch to DC 5V 12V 24V Lights（2 Pack）

$8.29

VictorsHome Magnetic Reed Switch NC NO COM Surface Mount Wired Door Window Contact Sensor with Adhesive Paper for Home Security and Burglar Alarm Systems MC-38 5pcs

$17.99

WOWOONE 5pcs Plastic Reed Switch Reed Contact Normally Open (N/O) Magnetic Induction Switch (2.5mm×14mm) with 10pcs Small Multi-Use Round Magnets

$14.99

Magnetic Reed Switch RC-35 NC/NO Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch,Sets of 6

$7.89

jing Magnetic Reed Switch MC-31B NC & NO Surface Mount Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch,Sets of 5

$9.99

Magnetic Reed Switch,Wired Door Window Contact Sensor,Micro Normally Open NO Alarm Reed Switch,10W 100v 0.5A Magnetic Reed Switch to DC 5V 12V 24V Light(2-Pack)

$16.99

Magnetic Reed Switch RC-36 NC Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch,Sets of 2

$5.99

EPLZON Magnetic Reed Switch Normally Open and Normally Closed NC NO Magnetic Proximity Switch for Door Alarm, Window Safety, DC 5V 12V 24V Light GPS Other Equipment Reed Switch (Black, Pack of 2pcs)

$9.99

EPLZON Magnetic Reed Switch Normally Open and Normally Closed NC NO Magnetic Proximity Switch for Door Alarm, Window Safety, DC 5V 12V 24V Light GPS Other Equipment Reed Switch (White, Pack of 5pcs)

$52.9

Ximimark PS-3150 Normally Open Magnetic Sensor Reed Switch magnetic proximity switch Door Contact Safety Security Alarm 3Pcs

$9.99

Gebildet 10pcs Plastic Reed Switch Reed Contact Normally Closed Magnetic Induction Switch with 10pcs Small Multi-Use Round Magnets

$14.99

EPLZON Magnetic Reed Switch Normally Open and Normally Closed NC NO Magnetic Proximity Switch for Door Alarm, Window Safety, DC 5V 12V 24V Light GPS Other Equipment Reed Switch (Black, Pack of 5pcs)

$20

Gebildet 6pcs Reed Switch Reed Contact Normally Open (N/O) Magnetic Induction Switch (2mm*14mm), Origianl Japan KOFU OKI Reed Switch

$9.99

Magnetic Reed Switch RC-36 NC Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch,Sets of 5 (White)

$8.29

Yomigoo Reed Switch 14mm, Normally Open (N/O) Magnetic Reed Switch (10pcs Plastic)

$14.99

DIYhz Reed Switch GPS-14A 14mm Plastic Anti-Interference Normally Open Magnetic Control Switch 10PCS

$9.99

Magnetic Reed Switch MC-33C Normally Closed Recessed Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch,Sets of 3

$15.59

URBEST® 8mm Detecting Distance Approach Sensor Inductive Proximity Switch NPN NO DC 6-36V Cylinder Type

$8.47

Heschen M12 Inductive Proximity Sensor Switch PR12-4DO Cylindrical Type Detector 4mm DC12-24V 2-Wire NO(Normally Open) CE

$10.99

Heschen M30 Inductive Proximity Sensor Switch PR30-10DN2 Cylindrical Type Detector 10mm DC12-24V 3-Wire NPN NC(Normally Closed) CE

$17.99

Heschen M12 Inductive Proximity Sensor Switch, LJ12A3-4-Z/BX, Detector 4mm, 10-30VDC 200mA, NPN Normally Open(NO), Non-shield Type, 3 Wire, 5PCS

$18.88

Gebildet 10pcs Plastic Reed Switch Reed Contact Normally Open (N/O) Magnetic Induction Switch (2.5mm×14mm) with 10pcs Small Multi-Use Round Magnets

$16.99

Gebildet 20pcs Reed Switch Reed Contact Normally Open (N/O) Magnetic Induction Switch (2mm*14mm)

$9.99

Panopticon Tech 10 pcs Brown Door Contacts Surface Mount NC Security Alarm Window Sensors WMagnetic Reed Switch. These ¾” Position switches (DCS) Work All Access Control & Burglar Alarm Systems

$27.29

Heschen M8 Inductive Proximity Sensor Switch, Non-Shield Type, LJ8A3-2-Z/AY-G-DC5V, Detector 2mm, 5VDC 200mA, PNP Normally Closed(NC), 3 Wire

$9.99

weidder (15pcs)10pcs Glass Reed Switch 5pcs Plastic Reed Switch Normally Open (N/O) Contact Magnetic Induction Switch 2.5mm×14mm with 15pcs Small Magnets K-080-081

$5.99

Inductive Proximity Sensors DC 10‑30V Square Proximity Switch 3 Wire 5mm NPN Inductive Proximity Switch for Detecting Metal TL-Q5MC1-Z

$19.99

Lzcdelyxiao 5Pcs NC Normally Close PNP Inductive Proximity Sensor Switch M12 Detector 4mm DC6V-36V 3 Wire LJ12A3-4-Z/AY

$109.95

Heschen M18 Inductive Proximity Sensor Switch PR18-5DP Cylindrical Type Detector 5mm DC12-24V 3-Wire PNP NO(Normally Open) CE

$9.99

2X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch, DC 5Vto12V Light (Black)

$9.99

Proximity Sensors E3F-DS10C4 18mm 3 Wire Inductive Proximity Sensor Detection Switch NPN DC10-30V 10mm Sensing Dist,Proximity Sensor

$11.99

Gebildet 5pcs Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch Black, Magnetic Door Sensor, Normally Closed Magnetic Switch

$8.99

Heschen M12 Inductive Proximity Sensor Switch Shield Type LJ12A3-2-Z/AY Detector 2mm 10-30VDC 200mA PNP Normally Closed(NC) 3 Wire

$12.99

MC-31B NC/NO Magnetic Reed Switch Surface Mount Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 10, Black

$9.99

MC-32 NC Magnetic Reed Switch Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 10, White

$8.99

DKARDU 2 pcs DC5-30V NJK-5002C Hall Sensor Hall Effect Switch Proximity Sensor NPN 3-Wires Normally Open with Magnet Proximity Switch Bracket M12

$8.99