The Three-Piece Meross Smart Water Sensor Alarm Is Compatible With Apple Product Details Remote Monitoring Automation: Compatible with Apple HomeKit (with HomeKit bridge, home WiFi stay online), and SmartThings, easy to set up, monitor water leaks remotely. Set triggers to control other Meross devices in the Meross app. e.g. once a leak is detected, the sensor will trigger Meross plug to turn off fish tank water pump. IP67 Waterproof: Fully sealed IP67 waterproof and dustproof design, works well in high humidity environment, no rust, no short circuit, high sensitivity, no false alarm. Made of advanced nickel-plated carbon steel material, the water level detector alerts and stays in place when the water level rises beyond. Real-time Alert Precise Detection: Equipped with sensitive probes, the water level threshold is Only 0.5mm. Water leakage activates a real-time local audible and visual alarm, and phone app notifications. 100M/328ft Transmission Distance: With SubG Wireless technology, 3X stronger and more stable signal transmission than WiFi and ZigBee/Thread Range, the sensor can effectively monitor water leakage even in the basement. Superb Versatility: One hub can control up to 16 Meross sensors; low-power consumption (18+ months battery life); check data anytime or export them out via the free Meross app. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.