Best Leak Sensors

TopTes PT199 Gas Leak Detector, Natural Gas Detector with Audible & Visual Alarm, Portable Gas Sniffer to Locate Combustible Gas Leak Sources Like Methane, Propane for Home(Includes Battery x2)-Orange

Natural Gas Detector, Plug-in Propane Natural Gas Leak Detector for Home Kitchen RV, Combustible & Explosive Gas Alarm for LPG, LNG, Methane

Yale AC-WS Sync Water Leak Sensor - Sync Alarm Accessory - 200m

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

Gas Detector, LPG | Natural Gas | Coal Gas Leak Detector, 3-Pin Plug-in Sensor Gas Monitor with Sound Alarm and LED Display, Methane Propane Butane Combustible Gas Alarm for Kitchen Hospital Garage

GROHE Sense Guard Smart Home Water Controller, Detects Water Leaks and Pipe Bursts, Shuts Water Off, Wi-Fi Connected, 22513LN0

Gas Detector, Natural Gas/LPG/Coal Gas Leak Aalrm, 3-Pin Plug-in Sensor Gas Monitor with Sound Alarm and LED Digital Display, Methane Propane Butane Combustible Gas Alarm for Kitchen Garage Hospital

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

Tapo Smart Water Leak Detector , Water Leak Sensor - Real-time App Notifications, 90 dB alarm, IP67 Waterproof, Battery included, Flexible Installation, Tapo Hub Required sold separately (Tapo T300)

X-Sense Wi-Fi Water Sensor, Smart Water Leak Detector with App Alerts, IP67 Waterproof, Wireless Detector for Kitchen, Bathroom, Basement, SBS50 Base Station Required, SWS0A, 3-Pack