LCD Display Digital Thermometer, NCElec -58F ~ +230F/ -50°C ~ +110°C Waterproof Thermometer Hygrometer with Probe

From the product description, check product page for current description, price and availability:

• Designed to test the temperature in cars, computer towers, aquariums, refrigerators, green houses etc
• Temperature Range: -50°C to +110°C / -58°F – +230°F (with °C/°F switch), Accuracy: ±0.1°C
• Voltage: DC5V, Dimension: 1.8″x1.2″x0.8″
• Rustproof probe, black backlight LCD display
• With a 4-pin connector for PC use

Possible uses include monitoring kegerator temperatures, beer fridge temperatures and fermentation chamber/area temperatures and more.

Note that this thermometer needs to be connected or wired to an appropriate power supply.

LCD Display Digital Thermometer, NCElec -58F ~ +230F/ -50°C ~ +110°C Waterproof Thermometer Hygrometer with Probe for Temperature Testing for Aquarium, Refrigerator, Cars, Pet Habitats, Etc.

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Make sure the components you use are compatible and rated for your intended application.  Contact manufacturer with questions about suitability or a specific application.  Always read and follow manufacturer directions.