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Safety Equipment and GearAir ToolsAlarm SystemsAll Home SecurityBathroom PlumbingBreakers, Distributors, and Load CentersDimmers, Switches, and Wall PlatesDoor HardwareDoor Security HardwareDoorbellsElectrical ToolsFire SafetyFurniture HardwareGarage Door Openers and HardwareGuttering & DrainageHand ToolsHome SafetyKitchen HardwareLight BulbsMailboxes and Mailbox AccessoriesMechanics ToolsPadlocksPersonal SafetyPower ToolsSafes & LockboxesSafety DetectorsSolderingSurveillanceTestersThermostatsValves & Valve RepairWater Heaters, Pumps & Tanks
Alarm Switch(402)
Uses item details. Price when purchased online
Sump Pump Alarm, Briidea Indoor/Outdoor High Water Septic Tank Alarm with 110dB Loud Alarm and Large LED Indicator, 10ft Level Float Switch, Ideal for Septic Sump Pump Pond Water Tank $69.99 Was $79.99

Sponsored
Now$6999
current price Now $69.99, Was $79.99$79.99
Sump Pump Alarm, Briidea Indoor/Outdoor High Water Septic Tank Alarm with 110dB Loud Alarm and Large LED Indicator, 10ft Level Float Switch, Ideal for Septic Sump Pump Pond Water Tank
24 out of 5 Stars. 2 reviews
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Akicon Humidity Sensor Switch for Bathroom Fan, Ventilation, LED Night Light, Air Moisture Control, Timer, UL Listed, White $43.99
Sponsored
$4399
current price $43.99Akicon Humidity Sensor Switch for Bathroom Fan, Ventilation, LED Night Light, Air Moisture Control, Timer, UL Listed, White
15 out of 5 Stars. 1 reviews
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FOUR E's Scientific Sump Alarm, High Water Alarm for Sump Pump & Septic Water, Weatherproof 110dB Audible Alarm with Float Switch for Indoor Use $42.99

Sponsored
$4299
current price $42.99FOUR E's Scientific Sump Alarm, High Water Alarm for Sump Pump & Septic Water, Weatherproof 110dB Audible Alarm with Float Switch for Indoor Use
Zuomeng High Water Alarm for Sump Pump, Flashing Light & 110 dB Alarm, IP67 Casing, Connects to Submersible Pump $75.99

Sponsored
$7599
current price $75.99Zuomeng High Water Alarm for Sump Pump, Flashing Light & 110 dB Alarm, IP67 Casing, Connects to Submersible Pump
YAHHU Emergency Panic Button with Key 250V Efficient Fire Security Alarm Switch - High-Quality Safety Hardware for Home and Commercial Use (2.36 inches / 6 cm) $8.46

$846
current price $8.46YAHHU Emergency Panic Button with Key 250V Efficient Fire Security Alarm Switch - High-Quality Safety Hardware for Home and Commercial Use (2.36 inches / 6 cm)
AURARMLET White Manual Fire Alarm Reset Switch for Cars, Quick Emergency Call Button, and Design $8.07

$807
current price $8.07AURARMLET White Manual Fire Alarm Reset Switch for Cars, Quick Emergency Call Button, and Design
Magnetic Sensor Home Door Window Entry Warning Alarm Switch $5.09 Was $6.10

Now$509
current price Now $5.09, Was $6.10$6.10
Magnetic Sensor Home Door Window Entry Warning Alarm Switch
M Buder GSM Gate Opener 4G Remote Control Relay Switch Mobile Phone Access Controller APP WEB Temp Humidity Alarm SMS Power Failure 110-240V 7.87 inches / 20 cm $65.43

$6543
current price $65.43M Buder GSM Gate Opener 4G Remote Control Relay Switch Mobile Phone Access Controller APP WEB Temp Humidity Alarm SMS Power Failure 110-240V 7.87 inches / 20 cm
4X Magnetic Sensor Home Door Window Entry Warning Alarm Switch $8.41

$841
current price $8.414X Magnetic Sensor Home Door Window Entry Warning Alarm Switch
Magnetic Reed Switch NC/NO Door Alarm Magnetic Contact Switch/Reed Switch $6.52

$652
current price $6.52Magnetic Reed Switch NC/NO Door Alarm Magnetic Contact Switch/Reed Switch
Briidea Power Return Alarm, Utility Power Back Alert for Generator, Siren & LED Indicator $29.99 Was $35.99

Sponsored
Now$2999
current price Now $29.99, Was $35.99$35.99
Briidea Power Return Alarm, Utility Power Back Alert for Generator, Siren & LED Indicator
65 out of 5 Stars. 6 reviews
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Cotinse Wireless Door Chime with RGB Light, 700ft Range Door Open Sensor Alarm, 58 Melodies, 5 Volume Levels, Security Alert for Home, Business & Retail Store $15.99

Sponsored
$1599
current price $15.99Cotinse Wireless Door Chime with RGB Light, 700ft Range Door Open Sensor Alarm, 58 Melodies, 5 Volume Levels, Security Alert for Home, Business & Retail Store
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Giles 20002 Switch; Ansul; Shutdown/Alarm; $210.86

$21086
current price $210.86Giles 20002 Switch; Ansul; Shutdown/Alarm;
10 Pack White 3/8" Plunger Contact Door Window Cabinet Alarm Switch Adjustable $32.95

$3295
current price $32.9510 Pack White 3/8" Plunger Contact Door Window Cabinet Alarm Switch Adjustable
Reduced price 5C-55ZL Heavy Duty Alarm Switch Sensor, Normally Closed 3-Wire with Strong Attachment Force Garage Door Contact, 50 mm Sensing, Metal Safety Shutter Sensor with Bracket $17.99 Was $22.68

Now$1799
current price Now $17.99, Was $22.68$22.68
5C-55ZL Heavy Duty Alarm Switch Sensor, Normally Closed 3-Wire with Strong Attachment Force Garage Door Contact, 50 mm Sensing, Metal Safety Shutter Sensor with Bracket
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HomeZone Wi-Fi Smart Keypad Controlled Window or Door Alarm with Magnetic Switch, Compatible with Alexa and Google Assistant, White, 4 oz $14.97

$1497
current price $14.97HomeZone Wi-Fi Smart Keypad Controlled Window or Door Alarm with Magnetic Switch, Compatible with Alexa and Google Assistant, White, 4 oz
663.6 out of 5 Stars. 66 reviews
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MC-31 Door Window Surface-Mount Contact Sensor Alarm Reed Switch White Pack of 5 $12.29

$1229
current price $12.29MC-31 Door Window Surface-Mount Contact Sensor Alarm Reed Switch White Pack of 5
Velleman HAA25 Low Cost Reed Switch for Alarm, 0.5" Height, 0.5" Wide, 2.6" Length, ABS

Velleman HAA25 Low Cost Reed Switch for Alarm, 0.5" Height, 0.5" Wide, 2.6" Length, ABS
Tuya ZigBee 3.0 Smart Light Switch with 6M Radar Human Motion Detection Alarm Sensor No/Need Neutral Wire Switch Black $19.10

$1910
current price $19.10Tuya ZigBee 3.0 Smart Light Switch with 6M Radar Human Motion Detection Alarm Sensor No/Need Neutral Wire Switch Black
WRISTBIQUE Emergency Fire Reset with Alarm Call Button for Quick Response in Vehicles and Buildings Safety $8.16

$816
current price $8.16WRISTBIQUE Emergency Fire Reset with Alarm Call Button for Quick Response in Vehicles and Buildings Safety
VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver) $56.91

Sponsored
$5691
current price $56.91VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver)
33.7 out of 5 Stars. 3 reviews
Door Alarm with Remote, GreenCycle 108dB Loud Door and Window Alarms for Pool, Anti-Theft Door Alarms for Kids Safety Home Store Garage Apartment Business Security IP66 Waterproof Indoor/Outdoor $20.69 Was $22.99

Sponsored
Now$2069
current price Now $20.69, Was $22.99$22.99
Door Alarm with Remote, GreenCycle 108dB Loud Door and Window Alarms for Pool, Anti-Theft Door Alarms for Kids Safety Home Store Garage Apartment Business Security IP66 Waterproof Indoor/Outdoor
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20X Magnetic Sensor Home Door Window Entry Warning Alarm Switch $21.94

$2194
current price $21.9420X Magnetic Sensor Home Door Window Entry Warning Alarm Switch
23 out of 5 Stars. 2 reviews
5X Magnetic Sensor Home Door Window Entry Warning Alarm Switch $7.73 Was $9.49

Now$773
current price Now $7.73, Was $9.49$9.49
5X Magnetic Sensor Home Door Window Entry Warning Alarm Switch
Security Alarm Door Window Sensor Switch $9.09

$909
current price $9.09Security Alarm Door Window Sensor Switch
Yajisi 4 Channel 4G GSM Remote Control Relay Switch, Intelligent APP/WEB/SMS Alarm Controller for Home Temperature, Humidity, and Power Failure Monitoring, 100-240V EU Plug $80.61

$8061
current price $80.61Yajisi 4 Channel 4G GSM Remote Control Relay Switch, Intelligent APP/WEB/SMS Alarm Controller for Home Temperature, Humidity, and Power Failure Monitoring, 100-240V EU Plug
10X Magnetic Sensor Home Door Window Entry Warning Alarm Switch $14.42

$1442
current price $14.4210X Magnetic Sensor Home Door Window Entry Warning Alarm Switch
Nieyigj 3.7V-12V Wireless Remote Control Switch 3A One Key Relay Built in Battery 4.72 inches / 12 cm Lightweight Compact Relay Switch for Anti-Theft Alarm Electric Door and Windows Smart Device $13.86

$1386
current price $13.86Nieyigj 3.7V-12V Wireless Remote Control Switch 3A One Key Relay Built in Battery 4.72 inches / 12 cm Lightweight Compact Relay Switch for Anti-Theft Alarm Electric Door and Windows Smart Device
2 Pack Overhead Door Floor Garage Shutter Contact Sensor Security Alarm Switch $30.95

$3095
current price $30.952 Pack Overhead Door Floor Garage Shutter Contact Sensor Security Alarm Switch
8X Magnetic Sensor Home Door Window Entry Warning Alarm Switch $8.97

$897
current price $8.978X Magnetic Sensor Home Door Window Entry Warning Alarm Switch
Uxcell Wired Door Contact Sensor N.O. Surface Mount Magnetic Reed Switch Black $7.88

Sponsored
$788
current price $7.88Uxcell Wired Door Contact Sensor N.O. Surface Mount Magnetic Reed Switch Black
TOPGREENER PIR Passive Infrared Motion Sensor Switch, Ambient Light Level Detector, No Neutral Required, 5A, 1500W, Occupancy Vacancy Modes, Ground Wire Required, Single Pole, TDOS5-JM, Black From $19.99

Sponsored
From$1999
TOPGREENER PIR Passive Infrared Motion Sensor Switch, Ambient Light Level Detector, No Neutral Required, 5A, 1500W, Occupancy Vacancy Modes, Ground Wire Required, Single Pole, TDOS5-JM, Black
43 out of 5 Stars. 4 reviews
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Magnetic Door Switch RC-33 NC Recessed Wired Security Window Door Sensor Alarm White- (10 Sets) $10.69

$1069
current price $10.69Magnetic Door Switch RC-33 NC Recessed Wired Security Window Door Sensor Alarm White- (10 Sets)
10Sets Wired Alarm Magnetic Door Contact Sensor Door Window Reed Switch Sensor With Double Side Tape For Security Window Sensors $13.99

$1399
current price $13.9910Sets Wired Alarm Magnetic Door Contact Sensor Door Window Reed Switch Sensor With Double Side Tape For Security Window Sensors
2X Magnetic Sensor Home Door Window Entry Warning Alarm Switch,2 x Magnetic Door Sensor (2 parts) 8 x Screw Nail,White $7.39

$739
current price $7.392X Magnetic Sensor Home Door Window Entry Warning Alarm Switch,2 x Magnetic Door Sensor (2 parts) 8 x Screw Nail,White
RC-33 NO Recessed Wired Door Contact Sensor Alarm Magnetic Reed Switch White $9.99

$999
current price $9.99RC-33 NO Recessed Wired Door Contact Sensor Alarm Magnetic Reed Switch White
Alarm Controls NTB-1 Battery Operated No Touch Sensor, Single Gang $123.17

$12317
current price $123.17Alarm Controls NTB-1 Battery Operated No Touch Sensor, Single Gang
6X Magnetic Sensor Home Door Window Entry Warning Alarm Switch $8.73

$873
current price $8.736X Magnetic Sensor Home Door Window Entry Warning Alarm Switch
15 out of 5 Stars. 1 reviews
Pentair ESO2 Shut-off Switch with Alarm $349.87

$34987
current price $349.87Pentair ESO2 Shut-off Switch with Alarm
Fire Emergency Reset Switch Fire Alarm Switch Key Reset Button Access Control Manual Fire Alarm Activation Button,1 x Reset Switch,Green $11.89

$1189
current price $11.89Fire Emergency Reset Switch Fire Alarm Switch Key Reset Button Access Control Manual Fire Alarm Activation Button,1 x Reset Switch,Green
TOPGREENER Motion Sensor Switch with Ambient Light Level, Occupancy & Vacancy Modes, No Neutral Required, Ground Wire Required, 150W LED/CFL, Single Pole, TDOS5-JM-W-2PCS, White, 2 Pack From $19.99
From$1999
TOPGREENER Motion Sensor Switch with Ambient Light Level, Occupancy & Vacancy Modes, No Neutral Required, Ground Wire Required, 150W LED/CFL, Single Pole, TDOS5-JM-W-2PCS, White, 2 Pack
43 out of 5 Stars. 4 reviews
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10Sets Wired Alarm Door Sensor Door Window Reed Switch Sensor $20.46

$2046
current price $20.4610Sets Wired Alarm Door Sensor Door Window Reed Switch Sensor
Riousery 2-Channel Wireless Remote Control Electrical System Relay Switch Module DC 12V Anti-Theft Alarm Receiver with Built-In Battery for Home Garage Roller Doors Windows Motorcycles 50m Range $12.82

$1282
current price $12.82Riousery 2-Channel Wireless Remote Control Electrical System Relay Switch Module DC 12V Anti-Theft Alarm Receiver with Built-In Battery for Home Garage Roller Doors Windows Motorcycles 50m Range
4X Magnetic Sensor Home Door Window Entry Warning Alarm Switch $9.09

$909
current price $9.094X Magnetic Sensor Home Door Window Entry Warning Alarm Switch
Yajisi Smart RF Remote Control Switch Multifunctional Wireless Switch for Alarm and Water Pump AC 380V Heavy Duty Electrical Control, 3000m Range, 315MHz Frequency (6.3 in / 16 cm) $21.60

$2160
current price $21.60Yajisi Smart RF Remote Control Switch Multifunctional Wireless Switch for Alarm and Water Pump AC 380V Heavy Duty Electrical Control, 3000m Range, 315MHz Frequency (6.3 in / 16 cm)
Riousery 433MHz DC 12V 4-Channel Wireless Remote Control Relay Switch Kit with One Transmitter and One Receiver for Smart Home Automation Doors Windows Alarm Systems $14.51

$1451
current price $14.51Riousery 433MHz DC 12V 4-Channel Wireless Remote Control Relay Switch Kit with One Transmitter and One Receiver for Smart Home Automation Doors Windows Alarm Systems
10 pk Recessed White Door Window Security Alarm Switch Reed Contact Magnet 3/8" $19.95

$1995
current price $19.9510 pk Recessed White Door Window Security Alarm Switch Reed Contact Magnet 3/8"
detex corporation emergency exit alarm magnetic switch ms-1039s $97.48

$9748
current price $97.48detex corporation emergency exit alarm magnetic switch ms-1039s
Alarm Controls - TS-2 - Alarm Controls TS-2 Push Button $61.24

$6124
current price $61.24Alarm Controls - TS-2 - Alarm Controls TS-2 Push Button
Outdoor 12V DC Automatic Infrared PIR Motion Sensor Switch for LED Light, Black $9.91

$991
current price $9.91Outdoor 12V DC Automatic Infrared PIR Motion Sensor Switch for LED Light, Black
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