Is two degrees hotter normal for this thermometer. The humidity is good but checkiing normal for the product.

Not normal. Accurate to within a half-degree when calibrated.

How do we select either of the 2 Certificate of Traceablitity options? Or is this already in the box?

The product does not come with a certificate & it's a hassle to obtain. The Extech website notes the following:Is my meter calibrated out of the box? How often should it be calibrated? Does it come with a calibration certificate? How & where can I get my meter calibrated?All Extech products are factory calibrated prior to shipment. This calibration is valid for one year. An annual factory calibration is recommended. Extech does not include calibration certificates with our products. NIST calibrations with data can be purchased for an additional charge for most products. To send your meter to be NIST calibrated please contact our return department for a return authorization number and other return information.

Can it display the temperature in Celsius unit?

Yes! Good question, and I did not know, so I dug out my instructions. I am now looking at those and my unit and there is a switch in the battery compartment below the battery for degrees F and degrees C. Using this, I have 78.6 F showing as 25.9 C. BTW, I'm actually considering getting another one for my car and work. It will need some protection, like a plastic sandwich box with some paper towel padding, but that will do it for me. Hope you enjoy yours as much as I like mine.

May i know does this item come together with a calibration certificate?

The calibration certificate is not included; it can be ordered together with 17030-28 calibration.

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Extech 445815 Humidity Meter with Alarm and Remote Probe

Extech 445815 Humidity Meter with Alarm and Remote Probe

Product ID: 423606152

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Details

Brand
Extech
Item Weight
0.19 Kilograms
Mounting Type
Tabletop Wall
Voltage
1.5 Volts
UPC
885866191235

📏Precise humidity measurement

📡Remote probe monitoring

🔔Customizable alarm alerts

Description

🔔 Don’t just measure humidity—master it with Extech precision!

PRECISION YOU CAN TRUST - Accurate humidity readings ensure optimal environment control.
COMPACT VERSATILE DESIGN - Lightweight and mountable on tabletop or wall for flexible placement.
READY TO USE OUT OF THE BOX - Includes AAA battery so you can start monitoring immediately.
REMOTE MONITORING MADE EASY - Use the remote probe to measure hard-to-reach spots effortlessly.
STAY AHEAD OF MOISTURE ISSUES - Instant alarm alerts keep you proactive, not reactive.

The Extech 445815 Humidity Meter is a lightweight, battery-powered device designed for precise humidity monitoring. Featuring a remote probe and an alarm system, it offers real-time alerts to prevent moisture-related issues. Its compact design supports both tabletop and wall mounting, making it a versatile tool for professional and home environments.

Specifications

Brand	Extech
Item Weight	0.19 Kilograms
Mounting Type	Tabletop, Wall Mount
Voltage	1.5 Volts
UPC	885866191235 793950458150
Global Trade Identification Number	00793950458150, 04016138375534
Model Number	445815
Additional product features	Alarm
Power source type	बटरी सचालित
Batteries required	Yes
Product Dimensions	9.91 x 1.99 x 10.93 cm; 190 g
Batteries	1 AAA batteries required. (included)
Item model number	445815
Country of Origin	USA
Item Weight	190 g

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