Minder Research Temp Minder Fahrenheit & Celsius Digital -40 F to 158 F; -40 C to 70 C Hygrometer & Thermometer

Indoor and Outdoor temperature and humidity. Minimum and Maximum temperature and humidity memory. Programmable temperature alert on all three channels. Includes 1 RS211 transmitter, optional transmitters sold separately. Transmission distance 426 ft (feet) 130 m (meters). Blue LED (light emitting diode) backlight. 1 year warranty.