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P3 P0270 Mold Alert Electronic Thermo-Hygrometer by P3
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List Price: $39.95 Our Price: $22.20 You Save: $17.75 (44%) Availability: Usually ships in 1-2 business days Category: Home See more product details
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Product DetailsManufacturer: P3 Brand: P3 International Edition: Kitchen Model: P0270 Color: Black Publisher: P3 Studio: P3 Music Label: P3 Product features: - Electronic thermo-hygrometer with Swiss precision sensor
- Monitors multiple factors that can lead to mold, dust mites, and bacteria
- Dew point of 65-percent humidity triggers audio/visual alarm
- Min/max with reset; degrees F or C; 2 AA batteries required (not included)
- Measures 2-1/2 by 3-3/4 by 3-3/4 inches
Accessories:
Tools and Hardware Reviews of P3 P0270 Mold Alert Electronic Thermo-HygrometerCustomer Review: Good, inexpensive dew point monitor Summary: 4 Stars
This product is advertised as a mold alarm. That's misleading. It neither measures mold growth nor displays any sort of spore count. The manufacturer's idea is that, above 65%, there's an increased risk of mold growth. So it flashes a little backlit frowny-face icon to let you know when the rh is above 65%. That idea is very common, but pretty weak as a consumer-appropriate risk signal. It's the rh *at the surface* that governs mold risk... not the rh measured in the middle of a room in the open air. If any sensor could measure rh in the first millimeter of air next to the potentially moldy surfaces, it would be a relevant indicator of mold risk. This device sits on a desk or table.
On the other hand, this sensor measures and display air temperature and rh...AND... it converts those values to dew point and displays that value as well. That's a pretty big deal.
It's the lowest-cost dew point display that I'm aware of. Other instruments which have this function cost well over $100, and they are hard to find. This little gem displays t/rh/Td clearly, for a very economical price. Even more surprising, in the range of interest for homeowners (between 20F and 70°F dewpoints), the instrument correlates very closely with instruments costing far more (over $300.00). This device responds very slowly, but that's to be expected. If you can wait for a few minutes after any change in the air temperature or dew point, you get a surprisingly accurate reading.
Plus, if you understand that *high dew points* really are the issue for mold risk, then in a very indirect way, the instrument could be called a mold risk alert. It's just that the risk level should be set as maximum dew points, not maximum rh. (Probably at 65°F dew point for air conditioned buildings, and at 40°F dew point in heated buildings... but it all depends on the building and the climate, and many other factors)
All-in-all, a very nice little dew point sensor, for a very economical price.
Description of P3 P0270 Mold Alert Electronic Thermo-HygrometerMold alert thermo-hygrometer gives accurate mold measurements when checking a room's ambient condition.
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