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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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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

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

Product ID: 23678036

Details

Battery Description
Alkaline
Brand
Protmex
Color
Orange
Item Weight
190 Grams
Product Dimensions
2.36"W x 2.9"H

💾99-group data logging

🔆LCD backlight for dark spots

🌡️4-in-1 temp & humidity modes

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VT22312

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Battery Description
Alkaline
Brand
Protmex
Color
Orange

Description

🌟 Stay ahead of the climate curve with Protmex PT6508 — your smart sensor sidekick!

EFFORTLESS READABILITY - Dual LCD display with bright backlight ensures clear visibility anytime, anywhere.
DATA AT YOUR FINGERTIPS - Stores up to 99 readings with MAX/MIN and data hold for trend tracking and instant insights.
BUILT FOR REAL WORLD USE - Compact, anti-slip design with auto-shutdown and low battery alert keeps you powered and in control.
PRECISION MEETS VERSATILITY - Measures ambient, dew point, wet bulb temps & humidity with lab-grade accuracy.
MILLENNIAL READY MULTI FUNCTION - Switch easily between °C/°F, perfect for HVAC pros, wine cellar curators, and green-thumbed urbanites.

The Protmex PT6508 is a professional-grade digital psychrometer combining humidity, ambient, dew point, and wet bulb temperature measurements. Featuring a high-precision sensor, dual LCD with backlight, data logging for 99 entries, and user-friendly functions like MAX/MIN, data hold, and auto shutdown, it’s designed for HVAC, agriculture, meteorology, and lifestyle monitoring. Compact and rugged, it’s powered by included AAA batteries and built to deliver reliable, real-time environmental insights wherever you go.

Specifications

ASIN	B017NF1POE
Battery Description	Alkaline
Best Sellers Rank	#17,569 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Humidifier Humidity Meters #20 in Humidifier Accessories
Brand	Protmex
Brand Name	Protmex
Color	Orange
Customer Reviews	4.6 out of 5 stars 893 Reviews
Global Trade Identification Number	06051651879433
Included Components	4 x AAA Batteries, 1 x Packing Bag, 1 x Use Manual
Item Dimensions W x H	2.36"W x 2.9"H
Item Length	7.2 Inches
Item Weight	190 Grams
Manufacturer	PROTMEX
Model	CECOMINOD046940
Mounting Type	Tabletop
Operating Humidity	0%-100%
Part Number	PPM-TI002-3
Product Dimensions	2.36"W x 2.9"H
Smart Home Compatibility	Not Smart Home Compatible
Temperature Reading Accuracy	plus_minus_1_point_5_degrees_celsius
Unit Count	1.0 Count
Upper Temperature Range	140 Degrees Fahrenheit
Voltage	1.5 Volts

Reviews

J**N

8.04.2026

L**E

9.04.2026

K**H

20.10.2025

G**G

10.06.2020

O**A

4.09.2025

T**E

11.01.2026

S**8

28.04.2026

J**W

12.04.2026

M**O

24.01.2022

S**É

1.11.2024

S**.

21.05.2025

P**L

28.03.2023

F**A

4.01.2022

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