2-Way Boat Alarm SystemProtects your boat and valuable equipment from theft.Features: Shock Sensor Detects Intruders Alerts you up to 3000 Yards when Activated Two Way Remote Alerts with Sound, Light & Vibration Up to 3000 Yards Response and 1000 Yards Transmit 128 db Alarm Horn Waterproof Main Engine Shock Sensor with Sensitivity Adjustment Easy Installation WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications: Sensors Included: 2 Sensor Quantity - Max: 2 Box Dimensions: 2"H x 8"W x 8"L WT: 0.8 lbs UPC: 733572073454