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Shop the best SALE offers on 3,258 low price detectors. SAVE on discount and clearance detectors in the Fruugo SALE, with big savings and cheap deals on Viewleaf. Buy detectors online safely in the Fruugo SALE, with secure payment and fast shipping to Canada.

Home Alarm SystemsSecurity Sensors & RecordersSafesEmergency PreparednessSecurity Lights & MirrorsFire Alarms & Extinguishers
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1 - 32 of 3,200
Tuya Smart WiFi Smoke Detector, Smart Controlled Sensor Real-Time Monitoring, Remote Alarm Notification
$21.95 Save $2.00 RRP: $23.95
USB Professional Water Pipe Leakage Detector Water Pipeline Leak Detector Plumbing Engineering Leak Detection Device EU Plug 100‑240V
$79.00 Save $20.00 RRP: $99.00
Tuya Zigbee Smart Light Sensor Illuminance Brightness Detection Home Automation Smart Home Detector APP Control
$23.95 Save $7.00 RRP: $30.95
Water Level Indicator Alarm Water Level Alarm Sensor Waterline Indicating Alarm Low or High Water Level Sensor Alarm with Silencer Switch
$94.00 Save $45.00 RRP: $139.00
Tuya Smart Zigbee Rain Sensor IP65 Waterproof Rain Detection Water Leak Sensor Real Time APP Monitoring Alert B
$15.95 Save $7.00 RRP: $22.95
Multifunctional leak detector/sound recorder, suitable for leak detection in various building pipes.
$34.95 Save $124.05 RRP: $159.00
1080P Tuya Smart Life Home Digital Viewer Peepholes EU PLUG Silver
$69.00 Save $5.00 RRP: $74.00
Soil sensor temperature humidity PH value salt RS485 detector
$104.00 Save $15.00 RRP: $119.00
Water Leakage Detector Kit High Sensitivity Water Pipe Leakage Monitor Tester with Earphone Headphone for Home 100240V EU Plug
$79.00 Save $25.00 RRP: $104.00
2pcs/set Water Detector Dowsing Rods Divining Witching Adjustable Durable Brass
$64.00 Save $10.00 RRP: $74.00
Water Leakage Detector Kit High Sensitivity Water Pipe Leakage Monitor Tester with Earphone Headphone for Home 100‑240V EU Plug
$79.00 Save $25.00 RRP: $104.00
Flashing LED Stop Sensor With Adjustable Stand Auto Parking Detector For Garage Port
$54.00 Save $20.00 RRP: $74.00
4 In1 Water Quality Tester Smart High Accuracy Automatic Data Storage IP67 Waterproof EC Meter for Swimming Pool Laboratory
$37.95 Save $11.00 RRP: $48.95
Water Leakage Detector Zinc Alloy 4 Gears 800mah Household Water Pipe Leak Checking for Car Wall Floor Heating
$409.00 Save $140.00 RRP: $549.00
Fish Tank Water Level Alarm Waterproof Water Alarm Detector with Probe Splitter Cable
$30.95 Save $9.00 RRP: $39.95
Water Quality Tester 5 In 1 PH Salt TDS EC Temperature Meter for Swimming Pool Drinking Water Aquariums High Accuracy Multi Display
$42.95 Save $16.05 RRP: $59.00
Water Quality Tester 4 in 1 PH TDS EC TEMP Water Quality Detector for Swimming Pool Drinking Water Aquarium Hydroponic
$49.95 Save $14.05 RRP: $64.00
F 999E Indoor Outdoor Floor Heating Leak Detector Concealed Pipe Leak Detector Water Pipe Leakage Detection Device 100‑240V US Plug
$1,024.00 Save $325.00 RRP: $1,349.00
Mini On Line PH Temperature Monitor Water Quality Tester for Swimming Pool Aquaculture
$74.00 Save $25.00 RRP: $99.00
M2 TDS Meter Test Pen Portable Water Quality Tester Detector Meter for Swimming Pool
$15.95 Save $4.00 RRP: $19.95
Electromagnetic Radiation Detector Data Hold Sound Light Alarm EMF Radiation Meter Detector
$69.00 Save $20.00 RRP: $89.00
Personal Alarm 120-130dB Safe Sound Emergency Self-Defense Security Alarm Keychain LED Flashlight for Women Girls Kids Elderly Explorer, Black, 1 pack
$17.95 Save $5.00 RRP: $22.95
Automatic Water Level Controller XKC C352 2P Non Contact Liquid Level Sensor for Water Tanks Filling System AC 110V to 220V
$69.00 Save $20.00 RRP: $89.00
Personal Alarm 120-130dB Safe Sound Emergency Self-Defense Security Alarm Keychain LED Flashlight for Women Girls Kids Elderly Explorer, Black, 1 pack
$16.95 Save $5.00 RRP: $21.95
Aqara Water Leak Sensor Smart Wireless Flood Water Immersing Leakage Leak Detector Alarm Sensor Waterproof App Remote Control Smart Home Security
$43.95 Save $15.05 RRP: $59.00
AC100-260V XKC C352 3P Automatic Water Level Controller Non-contact Liquid Level Sensor for Water Tank
$69.00 Save $20.00 RRP: $89.00
Wifi Smoke Detector Smart Fire Alarm Sensor Wireless Security System Smart Life Tuya APP Control Smart Home For Home Kitchen/Store/Hotel/Factory
$33.95 Save $10.00 RRP: $43.95
Wired Water Immersion Sensor Water Level Overflow Alarm Leak Detector Switch Probe for Home House Security Alarm System
$14.95 Save $4.00 RRP: $18.95
Liquid Water Leak Detector, 100dB Loud Sound Alarm, for Home, Boat, Workshop, Garage, Basement, Warehouse
$16.95 Save $6.00 RRP: $22.95
CO2 Detector, Wall-Mounted Temperature and Humidity Detector for Home, Compatible with Tuya App
$94.00 Save $35.00 RRP: $129.00
GY-6D PCB HTN Sound and Light Alarm Battery Capacity Indicator Display 12-84V (White Light)
$17.95 Save $5.00 RRP: $22.95
Wifi Smoke Detector Smart Fire Alarm Sensor Wireless Security System Smart Life Tuya APP Control Smart Home For Home Kitchen/Store/Hotel/Factory
$47.95 Save $16.05 RRP: $64.00