Best Ultrasonic Leak Detectors

Govee WiFi Water Sensor 3 Pack, Smart Water Leak Detector, 100dB Adjustable Alarm Suit for Home and Basement, Water Leak Alert with Email & APP Push

GoveeLife Water Leak Detector 2, LoRa Water Sensor Alarm Monitor Up to 1312ft Open-Air Range, Alexa, App, Email Notifications, Detector Protection for Your Home, Kitchen Sink, Bathroom, Basement

Winees WiFi Water Leak Detector, 3 Pack Water Sensors with 100dB Adjustable Alarm, Leak Alert Email&SMS Notification, 100M Transmission for Basement, Bathroom, Laundry, IFTTT, S1 Plus, 2.4G WiFi Only

YoLink Smart Home Starter Kit: Hub & Water Leak Sensor 4-Pack, SMS/Text, Email & Push Notifications, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Home Assistant

TOPTES

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

Govee Water Leak Detectors 5 Pack, 100dB Adjustable Audio Alarm Sensor, Sensitive Leak and Drip Alert, for Kitchen Bathroom Basement (Battery Included)

Flume 2 Smart Home Water Monitor & Water Leak Detector: Detect Water Leaks Before They Cause Damage. Monitor Your Water Use to Reduce Waste Installs in Minutes, No Plumbing Required

INFICON D-TEK Stratus Refrigerant Leak Detector and Portable Monitor, Model: 724-202-G1,Off-White

X-Sense

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, Model SWS54

Elitech HVAC Refrigerant Leak Detector Heated Diode Sensor Halogen Freon Sniffer, Air Conditioning Detection, R22 R410A R134A R1234YF CFCs HCFCs HFCs, ILD-100H