RuuviTag Pro 2 in 1 waterproof Bluetooth sensor provides monitoring for temperature and motion. The IP68 and IP69K certified sensor provides full protection against water with its fully sealed enclosure. It has been lab tested to work in water depths of up to 50 meters for 24 hours and can tolerate high pressure water spraying of 80˚C. The CR2477T battery is included and lasts up to 2 years. Sensors incorporate an expansion port and work with Ruuvi Gateway. RuuviTag is a weatherproof Bluetooth sensor that sends temperature and motion information directly to your mobile phone. It has limitless possibilities for use around your home and has a convenient, long-lasting battery. Connect RuuviTags to a Ruuvi Gateway Sensor Router.