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Technical Details
- Twin display thermometer with an internal indoor sensor and an external outdoor sensor
- Measures both Celsius and Fahrenheit
- Indoor temperature range -10 to 50 degrees Celsius, outdoor range -50 to 70 degrees Celsius
- Displays minimum and maximum temperatures with an easy reset button
- Alert gives off audible alarm when maximum and minimum set temperatures are met
Product Specifications
Part Number 675133
Batteries Included?No
Batteries Required?No
Item Dimensions
Weight50 grams
Length14 centimetres
Width30 millimetres
Height14 centimetres
Product Description
Manufacturer's Description
 | Twin display thermometer with an internal indoor sensor and an external outdoor sensor. Measures both Celsius and Fahrenheit. Indoor temperature range -10 to 50 degrees Celsius, outdoor range -50 to 70 degrees Celsius. Large 60 x 35 mm display indicates minimum and maximum temperatures with an easy reset button. Alert gives off audible alarm when maximum and minimum set temperatures are met. Wall mountable. Requires 1 x AAA battery (not included). |  |
Box Contents
- 1 x Thermometer with indoor and outdoor sensors
- 1 x Instructions
Product details
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Product Safety
This product is subject to specific safety warnings
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Customer Reviews
Most Helpful Customer Reviews
196 of 196 people found the following review helpful
Had I still been teaching A level Physics, this purchase would have been the ideal demonstration of the difference between accuracy and precision. I bought four of them to monitor the temperature in different rooms. I inserted the AAA batteries in all four and left them together on the same kitchen unit for a day, with the outside sensors still close to the displays. In the same environment, close together, the readings varied between 17.9 degrees Celsius and 24.7 degrees Celsius. One thermometer gave an indoor reading of 24.1 degrees Celsius 'indoors' and 18.2 degrees Celsius 'outdoors'. The outdoor sensor was indoors, within 10cm of the main unit.
So, they have a precision of 0.1 degrees, but they are totally inaccurate. I would suggest that accuracy is in the region of (+/-) 4 degrees Celsius.
Like any temperature sensor, they will show a trend of temperature, but, as accurate thermometers, they are next to useless, indeed, hardly fit for purpose. It is a pity. They look very nice.
So, they have a precision of 0.1 degrees, but they are totally inaccurate. I would suggest that accuracy is in the region of (+/-) 4 degrees Celsius.
Like any temperature sensor, they will show a trend of temperature, but, as accurate thermometers, they are next to useless, indeed, hardly fit for purpose. It is a pity. They look very nice.
27 of 27 people found the following review helpful
Amazon Verified Purchase
The Silverline Thermometer arrived yesterday, and out of the box threw up serious doubts. Placed on a shelf indoors to measure room temperature, the 'outside' sensor reported a room temperature of 19 degrees Celcius, and the 'inside' sensor reported a temperature of 24 degrees, well past the theoretical worst-case 2 degree variation of the listed +/- 1 degree accuracy. The next test was in a fridge, where readings stabilised at 'outside' 5.7 degrees and 'inside' 6.3. I thought maybe just the inside sensor was overzealous and a chart could be plotted to account for variation, so I tried it as intended with the external sensor dangling just outside the window away from direct sunlight.
Today it is cold and wet in Surrey, with thunderstorms and heavy downpours. The local weather station at Farnborough reports a temperature of 16 degrees. The Silverline thermometer reported an outside temperature of 29 degrees! Which then dropped rapidly to 20 degrees. The internal sensor reckons it's 23 degrees in this room, but it's nothing like as warm, with two windows open all day.
Maybe it's just my particular thermometer that's busted, but this thing just doesn't work and I have requested a refund. I'll also add that there's no calibration system, so you're trusting completely the intial setup.
Which is a shame. In principal it's a good little device without any real alternative unless you're willing to pay significant money. The intended purpose was for hot days, to know when outside is hotter than inside and windows should be closed to keep the heat out, and then when it's cooler outside so windows can be opened to cool the room down. This is difficult to gauge by touch due to the wind-chill effect. Sadly this indoor+outdoor thermometer isn't up to the task.
Today it is cold and wet in Surrey, with thunderstorms and heavy downpours. The local weather station at Farnborough reports a temperature of 16 degrees. The Silverline thermometer reported an outside temperature of 29 degrees! Which then dropped rapidly to 20 degrees. The internal sensor reckons it's 23 degrees in this room, but it's nothing like as warm, with two windows open all day.
Maybe it's just my particular thermometer that's busted, but this thing just doesn't work and I have requested a refund. I'll also add that there's no calibration system, so you're trusting completely the intial setup.
Which is a shame. In principal it's a good little device without any real alternative unless you're willing to pay significant money. The intended purpose was for hot days, to know when outside is hotter than inside and windows should be closed to keep the heat out, and then when it's cooler outside so windows can be opened to cool the room down. This is difficult to gauge by touch due to the wind-chill effect. Sadly this indoor+outdoor thermometer isn't up to the task.
40 of 41 people found the following review helpful
don't buy this ,
it doesn't tell the right temperature.
i had the outdoor probe indoors .
the temperatures had 5 degrees difference
they should have been the same if the thermometer
worked properly,
it doesn't tell the right temperature.
i had the outdoor probe indoors .
the temperatures had 5 degrees difference
they should have been the same if the thermometer
worked properly,
Most Recent Customer Reviews
Lovely Little Gadget
This is a pleasant looking tool for measuring outdoor/indoor temperatures, sitting on my kitchen worktop. Read more
Published 11 days ago by F. A. Chapman
Silverline Thermometer
I was very disappointed in the quality of this product when it arrived. I would rather have paid more for a better quality product. Read more
Published 1 month ago by foxy lady
Superb
This is not an expensive item but does exactly as required. I am very pleased with it. It is small and sits easily on my window sill with the probe placed outside.
Published 2 months ago by Mrs. L. K. Dickson
Reading needs careful interpretation
I have had mine for well over a year now and am quite happy with it. In fact I have bought one for another member of my family. Read more
Published 3 months ago by Alan
Excellent buy
Great to have both indoor and outdoor temperature on same unit. I have the probe out my window to read the outside temperature. Read more
Published 3 months ago by Mrs. M. J. Turner
Temperature in and out
Really good and, as far as I can tell, it very accurate. My only minor, minor gripe is that I would have swopped one of the buttons for a light. Read more
Published 3 months ago by Marmeduke
Great Thermometer
Did exactly as expected, very pleased, my only comment would be that this is not the most stylish design i have ever seen.
Published 4 months ago by PEG
Silverline thermometer
I found this thermometer very simple to install and easy to use and as far as I know fairly accurate.
Published 5 months ago by Stavely
Great Buy
Being used to monitor winter temperatures in garage, where water pipes are at risk. Simple to install. Not sure yet how accurate temperature measurements are?
Published 5 months ago by Vento65
Works well
Excellent thermometer and seems accurate enough for our purposes. It replaces a wireless model which ate batteries and was loads of grief when trying to synchronise the transmitter... Read more
Published 6 months ago by Mr. P. L. Hayhurst
Listmania!
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