Specifications: Material: Plastic Power: 1*9V Battery (NOT included) Dimensions: approx. 3.74" x 1.77" x 0.79" (9.5cm x 4.5cm x 2cm) Length of the Wire: approx. 37.4" (95cm) Siren Sound Level: approx.120 dB Features: 1. Automatic water leakage alarm is triggered when leakage or flooding is detected. 2. Low-cost, simple, and effective device prevents property damage, monetary loss, health risks caused by water damage. 3. Powerful 120-dB alarm travels up to 100 yards, keep reminding of you until the sensor is dry. 4. Advanced and sophisticated solid state circuitry ensures long-term sensitive and reliable operation. 5. Easy to remove, easy to clean double-sided adhesive foam tape pad included and built-in suction cup for easy attachment to an appliance. How to Install: 1. Turn the switch to the “OFF” situation. Put 1*9V Battery (NOT included) in the right place. 2. Turn the switch to the “ON” situation. When the sensor is contacted with water, it will keep reminding until the sensor is dry. Kindly Notes: * Due to the lighting and screen settings, the real color may slightly different from the picture. * Please allow slight size differences due to different manual measurement. * Thank you for your kind understanding. Package Includes: 3 x Water Leak Alarm (Others are NOT included)