MusicNomad Humitar ONE MN311

MusicNomad Humitar ONE MN311, Digital Hygrometer / Thermometer / Humidifier, Accurate, reliable, and easy-to-use humidity and temperature monitor for instruments, Perfect for acoustic guitars, Helps protect the instrument from protruding fret ends, cracks, and other damage caused by dryness, Easy to attach between the strings in the sound hole, Innovative, reusable Humid-i-Bar sponge stores a lot of water, Can be used to measure entire rooms, 'Safe Zone' area printed on the unit, Measures Fahrenheit (°F) and Celsius (°C), Monitors max/min level, Uses long-life AG13 battery (included) ...