RM420 - Thermometer Grado - Free user manual and instructions
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| Product Type | Digital Thermometer |
| Brand | Grado |
| Model | RM420 |
| Measurement Range | -50°C to +70°C (-58°F to +158°F) |
| Accuracy | ±1°C (±1.8°F) |
| Display | Backlit LCD display |
| Power Supply | 1 x AAA battery (1.5V) |
| Battery Life | Approximately 12 months |
| Dimensions | 70 mm x 30 mm x 15 mm |
| Weight | 50 g (including battery) |
| Material | ABS plastic housing |
| Functions | Current temperature, Min/Max memory, Auto power off |
| Temperature Unit | Switchable °C/°F |
| Mounting | Built-in stand and wall mount hole |
| Cleaning and Maintenance | Wipe with a soft dry cloth; avoid liquids |
| Safety Precautions | Do not expose to direct sunlight, heat sources, or excessive moisture |
| Included in Box | Thermometer, user manual |
| Warranty | 1-year limited warranty |
Frequently Asked Questions - RM420 Grado
How do I switch between Celsius and Fahrenheit?
Press and hold the MODE button for 3 seconds to toggle between °C and °F.
How do I replace the battery?
Open the battery compartment on the back, remove the old AAA battery, insert a new one with correct polarity, and close the compartment.
What is the thermometer's temperature range?
It measures from -50°C to +70°C (-58°F to +158°F). Outside this range, the display may show 'LO' or 'HI'.
How do I reset the Min/Max memories?
Press the CLEAR button once to reset both minimum and maximum recorded temperatures.
Why does the display show 'LO' or 'HI'?
This indicates the temperature is below or above the measurable range.
Can I use the thermometer outdoors?
Yes, it is designed for indoor and outdoor use, but protect it from rain and direct exposure to water.
Does the thermometer have a backlight?
Yes, it has a built-in backlight for easy reading in low light conditions. Press the LIGHT button to activate it for a few seconds.
How should I clean the thermometer?
Use a soft, dry cloth to wipe the exterior. Do not use solvents or immerse the device in water.
Is the thermometer wall-mountable?
Yes, it has a keyhole on the back for wall mounting, as well as a fold-out stand for tabletop placement.
What battery is required and how long does it last?
It requires one AAA 1.5V battery, which typically lasts about 12 months with normal use.
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USER MANUAL RM420 Grado
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Product information
Brand : Grado
Model : RM420
Category : Thermometer