wireless outdoor thermometers

Brian Whyer brian.whyer@btinternet.com
Fri, 20 Jan 2012 14:48:43 PST
I have had 2 of these with 3 remotes. 1 oregon Scientific more than ~10 years old, and an Extech ~3 years. No failures, but then none have remotes exposed directly to the elements. There is 1 in the frost free greenhouse, 1 in an unheated frame, and 1 in the garden, the latter inside a plastic pill container with holes in the bottom. Why risk them? Mine all have clip on battery covers with no weather seal.
The main problem is tracing the failed batteries when they go on the blink, and then resynchonising each unit where you have more than 1 remote per readout unit. I do have problems sometimes with apparent screening from wet foliage in summer but then I use them on their extreme quoted range.
Brian Whyer, Buckinghamshire, England, zone ~8ish. Eranthis and Scilla mischtschenkoana showing through.

>From: Ina Crossley <klazina1@gmail.com>
>To: Pacific Bulb Society <pbs@lists.ibiblio.org> 
>Sent: Friday, 20 January 2012, 22:18
>Subject: Re: [pbs] wireless outdoor thermometers
>I have Tesa wireless Pro.  Since April last year.  It never occurred to 
>me that it might die....  Is it the different climate which affects them?
>Ina  Auckland New Zealand  zone 10a
>On 21/01/2012 11:07 a.m., Kathleen Sayce wrote:
>> Now that I have had a cold frame in operation for more than a year, with wireless outdoor thermometers, I can report on the durability of several brands. Yes, several, due to sequential failures.
>> First to go, and not working at all after 4 weeks, was the Weather Channel thermometer. The indoor unit died a few weeks after the outdoor unit. This is a solar powered unit, so moisture in the wiring of the outdoor unit was suspected.
>> Second was La Crosse. The outdoor unit died a few weeks into its run. The indoor unit still works. I use it to keep track of temperatures on the indoor windowsill, where it sits.
>> Third was an Oregon Scientific unit. This one is still operational a year later. It quit working for a few days midsummer, but came back and has worked ever since.
>> Kathleen
>> Kathleen Sayce
>> ksayce@willapabay.org
>> 360-665-5292
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