Keep packaging material, like plastic bags and rubber bands, out of the reach of children,as they pose a choking hazard. Unlike some of the units featured on this list, this Brannan thermometer doesn’t measure humidity, but it does still display the maximum and minimum temperatures. The biggest downfall of digital greenhouse thermometers is that they are not always sufficiently waterproof. display with large numbers shows both the current temperature and humidity level as well as all-time high and low records for both measurements. Clive Harris is the creator of DIY Garden and a professional landscape gardening consultant with over 6 years experience.

Therefore, you can easily move it around and keep it on any surface, including shelves in the greenhouse. to give a known value when it's measuring (detecting) that value; you usually do this by adjusting a screw or other mechanism that results in the unit showing a 'reading', or measurement, of that known value on its display or output. You may wish to look for a thermometer that doubles up as a hygrometer (measuring humidity as well as temperature). If a thermometer can show the maximum and minimum temperature over a certain period (for example, 24 hours), you’ll be able to check if the temperature is getting too low or high. A: When placing a hygrometer in your home for measuring humidity, you should place it at the top of your house and away from any doors or windows.

The Garden Gate Review Team’s product reviews and in-depth guides are here to help you choose the best products for a beautiful and bountiful garden and backyard. Outdoor hygrometers are made for outdoor use and are more weather-hardy and durable than an indoor hygrometer. Unlike its larger sibling, the TP55 (also featured on this page), this TP50 doesn’t have a backlight so it’s not particularly easy to read in the dark. It will tell you in words if it perceives your environment to be dry, comfortable, or wet to take the guesswork out of knowing what humidity healthy air should be in your home.

Electrical hygrometer: this uses lithium chloride to measure lithium’s electrical resistance as the humidity changes. Additionally, some digital thermometers have a backlit display which makes the thermometer easy to read in low light – this can be particularly useful when checking on temperatures in the evening and early morning. This will give you accurate readings on the humidity in your house without being affected by external elements such as rain, wind, sunlight, and snow. It’s robust in its simplicity, and its green ABS plastic case has a water and dust resistance rating of IP65 – this makes it suitable for use outside in the greenhouse as well as indoors.It’s a useful tool to have hanging in the greenhouse, and the manufacturers claim that it is accurate to ±1°C. I've left them there for more than a week all three of them, just to see which kind of humidity we're dealing with inside my bedroom.