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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🌟 Stay ahead of the curve with precision climate control!

SMART POWER MANAGEMENT - Auto shutoff after 15 seconds conserves battery life, so your device is ready when you are—no more unexpected downtime.
DATA AT YOUR FINGERTIPS - Dual digital display with max/min memory lets you track environmental changes effortlessly—perfect for HVAC pros and tech-savvy managers.
PRECISION MEETS VERSATILITY - Accurately measures humidity (0-100% RH), temperature (-20℃ to 60℃), dew point, and wet bulb temps in one sleek device.
ANYTIME ANYWHERE VISIBILITY - Bright backlit LCD ensures clear readings even in dimly lit spaces—never miss a critical data point during late-night monitoring.
BUILT FOR THE MODERN PROFESSIONAL - Compact, lightweight (310g), and battery-operated for ultimate portability across offices, labs, wine cellars, and data centers.

The Protmex MS6508 is a high-precision digital thermometer and hygrometer that combines humidity, temperature, dew point, and wet bulb measurements in one compact device. Featuring a dual backlit LCD display, max/min data recall, and smart auto-shutdown, it’s designed for professionals in HVAC, agriculture, medical, and tech industries who demand reliable environmental monitoring anytime, anywhere.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Manufacturer	Protmex
Part number	PPM-TI002-3
Item Weight	310 g
Product Dimensions	5.99 x 5.99 x 18.39 cm; 310 g
Batteries	4 AAA batteries required.
Is Discontinued By Manufacturer	No
Size	6508
Color	orange
Power source type	Battery Operated
Voltage	1.5 Volts
Display Style	Digital
Special Features	High precision
Included Components	4 x AAA batteries, 1 x Packing bag, 1 x Instruction manual
Batteries Included	No
Batteries Required?	Yes
Item Dimensions LxWxH	6 x 6 x 18.4 cm

Protmex MS6508 Digital Thermometer/Hygrometer Digital Humidity Monitor with Thermometer Hygrometer with Dew Point and Wet Bulb Thermometer/Hygrometer

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