Fireboy Xintex Propane Fume Detector w 2 Plastic Sensors No Solenoid Valve Square Black Bezel Display Brand_IMUSA Operating as a wireless device Operating as a wireless device on a Micronet network the Mast Rotation Transmitter compares compass information from the boat with its own information and corrects the wind angle coming from a standard wind transmitter at the mast head Always Maxi Daytime Feminine Pads with Wings feature advanced 3X Protection System to give you up to 100% leak free confidence throughout your day Features Specifications: Detect propane leaks early and automatically shut off gas supply to prevent personal injury and possible explosions