Temp Minder Wireless RV Weather StationWireless indoor and outdoor thermometer. Features Fahrenheit or Celsius, clock with a min-max memory. Is 3 channel capable. Transmission of 30 Meters or 100 feet. Covers temperatures from -40 F to +149F. Batteries not included.Compact thermometer with clock. Indoor temperature/wireless outdoor temperature 1 RS10 remote sensor included. Minimum and Maximum temperature memory. 3 channel capability 2 additional RS10 remote sensors may be added - (sold separately). Clock 12/24 hour selectable, with date. Desk stand and wall mount included. Requires 2 AA and 2 AAA batteries (not included).MRI-200HI: Scale: Fahrenheit or Celsius, Outdoor Temperature Range: -40 F to 149 F; -40 C to 65 C, Size: 1-1/4" W x 4" H, Material: Plastic, Type: Wireless with Clock, Color: Black/White, Shape: Rectangular, Pkg Qty: 1, Package Type: ClamshellFeatures:Perfectly Sized For RV, Bedside, Apartment Or DormWireless Temperature Readings From Remote TransmitterThree Channel CapabilityGreat For Outdoors, Wine Cellar, Attic, Baby's Room, Greenhouse Or GarageLimited 1 Year WarrantyType: Fahrenheit And CelsiusDisplay: DigitalSize (IN): 4 Inch X 3 Inch X 1-3/4 InchBezel Color: BlackMounting Location: Wall Mount/ Desk TopQuantity: SingleBrand Minder Research Model MRI-200HI Item Weight 5.6 ounces Product Dimensions 5 x 7 x 9 inches Item model number 0154.1663 Manufacturer Part Number 0154.1663