Best Basement Alarms

CPVAN Indoor Motion Sensor Alarm with Siren, Wireless Infrared DIY PIR Motion Detector Burglar Alarm System, Battery Operated, 125dB Adjustable, Remote Control for Home/Garage/Van/Shed/Shop. (Black)

Shed Alarm Home Security Wireless | Shed Garage Lockup Summer House | Easy Self Install Waterproof Vibration Tech 113db Exceptionally Loud

SwitchBot WiFi Water Sensor 3 Pack, Smart Water Leak Detector, 100dB Adjustable Alerts & App Alerts, IP67 Waterproof, Wireless Detector for Kitchen, Bathroom, Basement, No Hub Required (Support 2.4G)

X-Sense Wi-Fi Water Leak Detector, Smart Water Sensor Alarm, Water Detector Alarm with 1700 ft Transmission Range for Kitchens, Basements, Bathrooms, 3 Water Detectors & 1 Base Station, SWS54

CPVAN Indoor Motion Sensor Alarm with Siren, Remote Control Wireless Infrared DIY PIR Motion Detector Burglar Alarm System, 125dB Adjustable, Battery Operated, for Home/Shed/Garage/Van/Shop.

SEBSON 2x Water Alarm Mini GS153, 10 year long term battery, water leak detector 60x60x24.2mm, water sensor with lithium battery

Water Leak Sensor, Wireless Water Leak Detector, Wireless Mini Flood Detector for Alarm System and Smart Home Automation, Water Sensor Alarm for Kitchen Bathroom Basement

X-Sense Wi-Fi Water Sensor with SBS50 Base Station, Smart Water Leak Detector, App Alerts, IP67 Waterproof, Wireless Detector for Kitchen, Bathroom, Basement, SWS0A41

Aqara Water Leak Sensor, REQUIRES AQARA HUB, Wireless Water Leak Detector, Wireless Mini Flood Detector for Alarm System and Smart Home Automation, Water Sensor Alarm for Kitchen Bathroom Basement

Motion Sensor Alarm with Siren, Wireless Infrared Home Alarm Systems, DIY PIR Motion Detectors with Remote Control, 125dB Shed Alarm for Shop/Office/Home Security (White)