Features: Water immerse and rainwater 2 in 1 sensors, high sensitivity, adjustable in 3 gear, waterproof intelligent sensors. High sensitivity design with up to 37 detection electrodes for more sensitive detection. Two installation ways to meet differentiated water immerse state perception needs. Bluetooth-compatible low power consumption, build-in CR1632 button battery, with long battery service life of up to 3 years. IPX7 waterproof, minimalist design, small in size and lightweight, easy to install. Specifications: Material: Stainless Steel Size: approx. 2.6x2.30x4.35cm/1.02x0.9x1.71inch Product Name: Water immerse and rainwater alarm Battery model: CR1632 Battery capacity: 140mAH Working temperature: -10℃~40℃ Waterproof rating: IPX7 Package Includes: 1Pc Water Leak Alarm note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.