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Home >> Home & Garden >> Home Improvement & Tools >> Electrical >> Household Sensors & Alarms

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Vertical Water Level Sensor Aquarium Floating Switch

Vertical Water Level Sensor Aquarium Floating...
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Wall Mount Security Passive Infrared Detector Sensor PIR Alarm DC 9-16V

Wall Mount Security Passive Infrared Detector...
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1Kg Capacity Platform Hopper Scale Load Cell Weighing Sensor

1Kg Capacity Platform Hopper Scale Load Cell...
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5 Pcs 3144 Hall Effect Sensor Magnetic Detector 4.5-24V

5 Pcs 3144 Hall Effect Sensor Magnetic Detector...
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Home Security Wireless Infrared Motion Sensor Detector PIR Alarm 9-16V DC

Home Security Wireless Infrared Motion Sensor...
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Household Sensors & Alarms

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White Digital LCD Display Calendar Clock Alarm Temp Humidity Meter

White Digital LCD Display Calendar Clock Alarm Temp...: Digital Temp Humidity Meter Temperature Range Indoor: -10°Cto 50°C Outdoor:-50°C to 70°C Humidity Range 20%RH~99%RH Power Supply 1 x 1.5V AAA Battery (Not Included) Size(Approx) 14.8 x 8.7 x...; Add To My Wish List

$16.55
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5VDC MQ-3 Breathalyzer Checker Alcohol Ethanol Gas Sensor Module

5VDC MQ-3 Breathalyzer Checker Alcohol Ethanol Gas Sensor...: Alcohol Gas Sensor Module Type MQ-3 Working Voltage 5VDC Storage Condition Temperature:-20C-70C,Humidity:<70%RH Working Conditions Temperature:-10C to 65C, Humidity:<95%RH&nb PCB Board Size 3.2 x 2cm/1.3"...; Add To My Wish List

$9.60
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MQ2 5VDC DIY PCB Board Smoke Gas LPG Butane Propane Sensor Module

MQ2 5VDC DIY PCB Board Smoke Gas LPG Butane Propane Sensor...: Smoke gas Sensor Module Type MQ-2 Working Voltage 5VDC Detection Zone 300-10000ppmm Characteristic Gas 1000ppmm Iso-Butane Sensitivity Air/Rin Typical Gas > 5 Response Time <=10S Recovery Time <=30S PCB Board...; Add To My Wish List

$10.49
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AC 220V 25mA 95db 62mm Dia Metal Electric Round Alarm Bell Red

AC 220V 25mA 95db 62mm Dia Metal Electric Round Alarm Bell...: Electric Round Bell Model MS-190 Rated Voltage AC 220V Current 25mA Sound Intensity 95dB Bell Diameter 62mm / 2.4" Mounting Hole Diameter 4mm / 0.16" Wire Length 350mm / 13.7", 290mm/ 11.4" Overall...; Add To My Wish List

$21.98
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Round Plug Voltage AC 100/110V Wireless Remote Control Doorbell Switch Set

Round Plug Voltage AC 100/110V Wireless Remote Control...: Wireless Remote Control Doorbell Doorbell Size 10.8 x 7.5 x 3.7cm/ 4.3" x 3" x 1.5"(L*W*H) Button Size 8 x 4.4 x 1.5cm/ 3.2" x 1.7" x 0.6'' (L*W*H) Doorbell Battery Power 2 x AA Batteries(Not...; Add To My Wish List

$12.99
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AC 220V School Factory Round Electric Sound Bell 75mm Dia

AC 220V School Factory Round Electric Sound Bell 75mm Dia: Electric Bell Rated Voltage 220V AC Top Diameter 75mm / 3" Base Diameter 90mm / 3.5" Overall Height 56mm / 2.2" Fixing Holes Diameter 5.8mm / 0.228" Material Metal, Plastic Color Silver Tone, Black...; Add To My Wish List

$11.45
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114dB Sound MS-190 Mount Mini Motor Siren Buzzer Red AC 220V

114dB Sound MS-190 Mount Mini Motor Siren Buzzer Red AC 220V: Mini Motor Siren Model MS-190 Rated Voltage AC 220V Sound Intensity 114dB Bell Diameter 62mm / 2.4" Mounting Hole Diameter 4mm / 0.16" Wire Length 25cm / 9.8" Overall Size(Approx.) 75 x 108mm / 3" x...; Add To My Wish List

$22.99
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DC 24V 85dm Plastic Shell Wired Connector BJ-1G Electronic Buzzer

DC 24V 85dm Plastic Shell Wired Connector BJ-1G Electronic...: Electronic Buzzer Model No. BJ-1G Sound-making Type Continuous Sound Rated Voltage DC 24V Rated Current 20mA Frequency 50/60Hz Sound Decibel 85dB Body Diameter 53mm / 2.1" Overall Size 7 x 4.8 x 5.3cm/2.8" x 1.9" x...; Add To My Wish List

$7.99
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AC 220V 20mA 85db Continuous Sound 2 Wire Electronic Buzzer

AC 220V 20mA 85db Continuous Sound 2 Wire Electronic Buzzer: Electronic Buzzer Model No. BJ-1 Sound-making Type Continuous Sound Rated Voltage AC 220V Rated Current 20mA Frequency 50/60Hz Sound Decibel 85dB Body Diameter 55mm / 2.2" Overall Size 6.8 x 5.5 x 5.3cm/2.7" x 2.2" x...; Add To My Wish List

$7.99
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16A/6A 250VAC 4 Pin Terminal DPST Yellow Indicator Lamp Rocker Switch

16A/6A 250VAC 4 Pin Terminal DPST Yellow Indicator Lamp...: Rocker Switch Poles DPST Terminals 4 Pin (ON-OFF) Rating Voltage 16A/6A 250VAC Light Color Yellow Total Size 3.5 x 2.5 x 3.1cm / 1.4" x 1" x 1.2"(L* W *T) Mounting Dimension 2.5 x 2.2 x 2.8cm/1''...; Add To My Wish List

$5.99
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DC 12V 2 Wire Industrial Red LED Flashing Alarm Buzzer 100dB BJ-3

DC 12V 2 Wire Industrial Red LED Flashing Alarm Buzzer...: Flashing Alarm Buzzer Model No. BJ-3 Rated Voltage DC 12V Sound Pressure 100dB Light Color Red Overall Size 6.5 x 4.3 x 4cm/2.6" x 1.7" x 1.6" (L*W*H) Mounting Hole Diameter 3mm / 0.12" Wire Length 20cm / 7.9" External...; Add To My Wish List

$9.28
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Pair Outdoor 80m Sensing Distance Active Infrared Motion Detector

Pair Outdoor 80m Sensing Distance Active Infrared Motion...: Active Infrared Motion Detector Model ABT-80 Type Double Beam Install Distance(Max.) Outdoor: 80m Indoor: 240m The Longest Distance:900m Survey Way Lights Covered At The Same Time Light Source Infrared LED Response...; Add To My Wish List

$47.49
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