Other Leak Detectors We LikeTP-Link Tapo T300 Water Leak Detector Photograph: Simon HillTP-Link Tapo T300 Water Leak Detector for $20: What I like most about these water leak detectors is that they have four metal probes underneath and two above, so they swiftly detect water dripping on top or pooling beneath. The Govee Wi-Fi Water Sensors only detect water, but they are effective. Aqara Water Leak Sensor for $19: This Zigbee sensor is best used with Apple’s HomeKit, and you need an Aqara hub (sold separately). Stitch by Monoprice Water Leak Sensor for $22: This affordable water leak detector has a design that’s similar to our top pick. Leak Detectors to AvoidWe did not have a great experience with every water leak detector we tested.