WA-MT Skylink Wireless Water Leak Flood Sensor for SkylinkNet Connected Home Alarm Security & Home Automation System and M-Series, Alert Solutions for Bathtub, Shower, Sink, Washing Machine Leaking Detection and more. Instantly know of a Water Leak to prevent or minimize damage to your home or business. Wireless range up to 600 feet in open area (Sensor to HU-100 Internet Hub or M-1 Main Console/Indoor Siren) Low battery detection. Compatible with SkylinkNet iOS Apple & Android App and M-Series. Lifetime Support: Toll Free 1-800-304-1187; Email: support@skylinkhome.com