Amazon.com: Honeywell TM005X Wireless Indoor/Outdoor Thermo-Hygrometer: Electronics

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Amazon.com: Honeywell TM005X Wireless Indoor/Outdoor Thermo-Hygrometer: Electronics Review

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You can trust my review, bad or good is your choice and i hope you can try to buy this product and then you know this product good or no. Next time you can make a review for another people.

I was most interested in the humidity measurement. I conducted a calibration****(See update at end of review) with a sling psychrometer. A sling psychrometer measures wet bulb/dry bulb temperature and is the least expensive (albeit a bit tedious to use) and most accurate way to determine relative humidity (RH).

I needed to know relative humidity for curiosity indoors and for a chamber in my basement used to dry cure sausage (I needed a 70%RH environment). The Honeywell unit was spot on with the sling psychrometer (and temp. was accurate as well).

The unit is new; I need to check it over time for accuracy. However, it's running very well so far and the price is right. I'll be buying more remote sensors [...] I found the remote sensor part no. is TS33C, can find them on Amazon with that search).

The majority of complaints say the humidity is "off." However, I didn't see a single valid calibration conducted.

Update 01-March-2009
I just took the main unit, the sensor and sling psychrometer. The conditions in my home at time of testing were 68F and 30% relative humidity.

Main unit read 68.4F/30% RH
The Sensor: 68.0F/30% RH
Sling Psychrometer: 68F/31% RH

The sling psychrometer consists of two sealed thermometers and will never need a calibration, it is an accurate standard. This Honeywell Unit is pretty darn good.

Update 13-Dec-2009
Someone contacted me and corrected a big point. I did not calibrate the unit by adjusting it to a known standard, I simply compared the values. My apologies for this rather serious error.
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This is my review from high rate, but you can see another review from this store and you can get this product with good service.