Neewer® Professional Wireless Digital Swimming Pool SPA Floating Thermometer
*    Transmitter dive up to 30m*    Calendar from 2000 to 2099*    Time alarm with snoozeSpecification:*    Indoor temperature: 0C to +50C.*    Outdoor temperature range:-40C to +60C.*    Temperature accuracy:1.0C.*    Receiver: 2xAAA 1.5V alkaline batteries.*    Transmitter: 1.5V 2xAA alkaline batteries.Package Contents:1 x WIRELESS DIGITAL FLOATING THERMOMETER