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15 of 15 found the following review helpful:
 Erratic?Apr 25, 2009
By Ian Walters
This equipment is frustrating.
It is, as the first reviewer said, very easy to get going. Despite caveats in the instructions about situations where the units may not be able to communicate well enough, we have had the full quantity of signal strength bars showing on the main unit display no matter where we place the units, even when the signal has to go between concrete floors and through external concrete walls. Remarkably good. The bar display feature is notably worthwhile.
We have now had the 00611 for about three months.
Initially, the two units agreed with each other out of the package when placed side by side, which is of course how it should be.
However, we have recently had to do this sort of side-by-side test again as the reading from the outdoor unit started getting 'stuck' at an unlikely 98% when humidity was very high, but wouldn't come down, even when brought indoors for a while. [The spec. says that the units' operating range only extends to 95% - so I think '98%' may be a kind of default or error reading. It was a very high humidity day when the 98% problem occurred].
We assumed that the outdoor sensor had become damp and needed time to dry out in order to register lower humidity levels.
The outdoor unit is normally installed in a totally covered location, high on a wall under a four-foot overhang.
The outdoor humidity reading did indeed abruptly start to come down after the unit had a few hours indoors, but stopped when it got within 10% of the indoor reading. (The two units were placed side by side indoors at this time).
With the two units still side by side, we turned on a dehumidifier on the far side of the big room. The outdoor unit reading seemed to get a jolt and soon showed 10% less, not more, than the indoor reading.
But now, as I write, with the dehumidifier having been off for twelve hours, the outdoor unit, still indoors alongside the main unit, registers 71% whereas the indoor reading is 65%. It's all very confusing.
The batteries are Duracell Alkaline and are testing at 1.57 or 1.58 volts.
This cycle of events has actually been repeated, with small variations, a number of times.
There's clearly something going on that I don't understand. It's not certain that there's anything wrong with the units, but maybe the physics (?) of it all are just too much for a consumer-grade product to encompass without these apparent aberrations popping up.
16 of 17 found the following review helpful:
 Forget ItMay 06, 2010
By George Strayline
"W2GSS"
This is my first one star rating. I was attracted to the unit because it did not have a silly clock. I don't need to know what time it is, I just wanted to know the temperature. This units readings are so far off it's not even funny. it gets 1 star only cause the indoor temperature is accurate, and that's it, otherwise it would have gotten a zero star; or even a negative 1 star if it was possible. I was told the problem may not be the receiving unit, it may be the sending unit, who knows.. I simply don't want the hassle of returning it so I may just end up trashing it. I'll lick my wounds and move on to something else. I would like to give you all some hope but not with this product. This is actually the first time I have been disappointed with any type of thermometer.
My recommendation, look for something else
11 of 12 found the following review helpful:
Too inaccurate to bother withNov 09, 2010
By Picturesque Music
I've been playing with this now for two days testing it. Its inside and outside temperature gauges are both unacceptably inaccurate. Although I could have given it another star for features, layout, etc. (the screen works well and if this thing was accurate it would be great), I see no point; *a thermometer that is inaccurate is wholly not worth having*. If its readings cannot be relied upon there is no point in having it. You don't design in cupholders for a car that never starts or put granite countertops in a house that is caving in. The features on this mean nothing if its basic mandates cannot be met. I'm frankly surprised that in 2010 a digital thermometer could be so wickedly off. People have put a radio control car on a rocket and driven it around Mars and here we are with a thermometer about as accurate as me putting my hand outside and just going by feel?
With my inside temp ranging between 61 and 68 this once in a blue moon reads the same indoor temp but almost all of the time is predictably 2-4 F higher. Indoor humidity it may read a little low but I can't say that for sure. Its outdoor readings are a bit horrific, also in the +2-5 range, though this morning with it 35F outside according to weather station (and my car tells me the weather station is indeed accurate for this location), in the dark and no sunlight or anything else this was reading 41F. It's total nonsense.
As one reviewer found, I had the humidity-sticking problem. Yesterday it was stuck at 98% outside (weather.com was telling me 91). Not long after despite no change in conditions this went right down to 35 and stayed there for a long time. At some point while at work it worked its way up again. So its outdoor humidity reading is a complete waste of time.
A side note, I bought several of the $7 wired units at the same time and found that their outdoor readings were more accurate than this one's.
7 of 8 found the following review helpful:
Grossly inaccurateMay 24, 2010
By El Lobo
I purchased this about four years ago because I was wanted the outdoor humidity sensor feature. I had previously been using a Taylor indoor/outdoor wireless thermometer and was very pleased with its performance and accuracy. But I wanted to see the outdoor humidity as well.
I installed the batteries and placed the indoor unit next to another digital indoor humidity sensor and an analog dial humidity sensor. The indoor and analog sensors agreed, the Acu-rite indoor reading was about seven percentage points lower. Now, after a number of years of use, I have found that the outdoor humidity reading is consistently low by about 10 percentage points, particularly at high temperatures, when it counts the most. I consider this error unacceptable, even for a home unit, and do not recommend this product.
8 of 10 found the following review helpful:
 The hygrometer is fairly accurate if you know how to test it.Oct 22, 2010
By Jesse G Kaltenberg
Like some reviewers, I got this weather station and it at first seemed that the hygrometer was inaccurate. This was based on comparing my reading to local weather station readings online. Most were not even close. The problem is that relative humidity is highly variable, and can change greatly depending on many factors, including the amount of grass and vegitation around your transmitter, soil moisture content, etc. The true way to test the accuracy is to determine the wet bulb temperature in your immediate vicinity. Along with the temperature, you can calculate what the relative humididty should be. After trying this, I found that accuracy of the hygrometer to be pretty much as described on the package (+-5%).
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based on 27 reviews
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