Can the relative humidity be calibrated by the user?

Neither relative humidity nor temperature can be calibrated by the user. User's manual does not mention this possibility.

Can this item be sent in for re-calibration periodically, and updated certificate?

All the items have been calibrated before sending out, and if you need to calibate again, then you can send it to us for re-calibration, but it will cost a lot of time and shipping fee

?Viene con el certificado de calibración?

Thank you for your question. If you need it you can contact our customer service and we will send you a calibration operation manual, which is recommended to be used under professional personnel and operating equipment.

Has anyone who bought this unit tested it for accuracy?

That I do not know. what I can say is that the temperature it shows is close to what the weather people say the temp.s are. I bought it because the local weather people have decided to no longer give the dew points in the forecast. I do know that the higher the dew point reading the device shows the more humid it feels. I also had issue with deciding to just give a date on the map as to when the "Monsoon season" starts and stops. The method of a dew point higher than 55degrees 3 days in a row for the start and below 55 degrees 3 days in a row for the end makes more sense.

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🌿 Master your environment with precision and style!

SMART DATA MANAGEMENT - MIN/MAX tracking, data hold, and unit conversion keep your measurements organized and actionable.
USER FRIENDLY DISPLAY - Dual LCD with backlight ensures clear readings even in low-light or night conditions.
ENERGY EFFICIENT DESIGN - Auto shutdown after 30 minutes plus low battery indicator means no wasted power or surprises.
PRECISION YOU CAN TRUST - High-accuracy sensors deliver reliable data from -20°C to 60°C and full humidity spectrum.
ALL IN ONE CLIMATE CONTROL - Combines temperature, humidity, dew point & wet bulb readings for total environmental insight.

The Protmex PT6508 is a versatile digital psychrometer combining temperature, humidity, dew point, and wet bulb measurements in one compact device. With a wide operating range (-20°C to 60°C, 0%-100% RH), dual backlit LCD display, and smart features like MIN/MAX tracking, data hold, and auto shutdown, it’s perfect for HVAC professionals, agriculture, meteorology, and more. Lightweight and battery-efficient, it delivers reliable, real-time environmental data wherever you need it.

€ 107.05

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TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

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Upper Temperature Range	140 Degrees Fahrenheit
Operating Humidity	0%-100%
Voltage	1.5 Volts
Mounting Type	Tabletop
Battery Type	Alkaline
Item Weight	190 Grams
Item Dimensions W x H	2.36"W x 7.24"H

PT6508 Temperature Humidity Meter, Digital Thermometer Hygrometer Monitor with Ambient, Dew Point, Wet Bulb for Indoor/Outdoor MIN, MAX, Data Hold, LCD Backlight

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