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Silverline 675133 Indoor/Outdoor Thermometer -50C to +70C

by Silverline Tools
3.8 out of 5 stars  See all reviews (99 customer reviews)
RRP: 10.40
Price: 7.61 (15.25 / 100 g) & FREE Delivery in the UK on orders over 10. Details
You Save: 2.79 (27%)
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  • 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
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Frequently Bought Together

Silverline 675133 Indoor/Outdoor Thermometer -50C to +70C + DIGIFLEX Portable Home Wall / Desk LCD Display Indoor Outdoor Thermometer Hygrometer with 2 Sensors
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Product Information

Technical Details
Part Number 675133
Item Weight50 g
Product Dimensions0.1 x 0.1 cm
Item model number675133
Item Package Quantity1
Number Of Pieces1
Batteries Included?No
Batteries Required?No
Weight50 grams
Additional Information
Best Sellers Rank 3,135 in DIY & Tools (See top 100)
Shipping Weight109 g
Delivery Destinations:Visit the Delivery Destinations Help page to see where this item can be delivered.
Date First Available30 Nov 2006

Product Description

Manufacturer's Description

Twin display thermometer, measures in Celsius and Fahrenheit. Indoor and outdoor sensors. Indoor temperature range -10°C to +50°C (-14°F +122°F) and outdoor temperature range -50°C to +70°C (-58°F +158°F) displayed on a large LCD display. Requires 1 x AAA battery (not included).

Recognised and trusted throughout the UK and Europe, Silverline’s comprehensive range of tools meets both current and future demands. New products, utilising the latest technology, are being delivered every day, ensuring Silverline customers get the very latest tools.

The Silverline range includes over 5000 hand and power tools for use in the home, garden and workshop. All Silverline tools come with unbeatable guarantees - hand tools are guaranteed for life, and power tools are guaranteed for 3 years.

Subjected to thorough testing, Silverline delivers tools that comply with the very latest standards in quality and safety. Through continuous monitoring and improvement of our suppliers, we supply tools that are approved and certified with long guarantees, so you can be sure you’re investing in the best tools on the market today.

Silverline cares about the environment. As our products are sourced from factories around the world, we run continuous improvement programmes to ensure we only deliver quality tools that comply with the very latest environmental standards.

Silverline is committed to supporting human rights and upholding moral and ethical standards. We monitor our supply chain closely through a controlled programme of factory audits and assessments. To pass our audit, all suppliers must actively comply with all relevant local and international legislation and demonstrate a good, safe and healthy working environment.

Box Contains

  • 1 x Thermometer with indoor and outdoor sensors
  • 1 x Instructions

Product Safety

This product is subject to specific safety warnings
  • Warning: Only for domestic use

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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews
260 of 260 people found the following review helpful
1.0 out of 5 stars Precision yes. Accuracy no. 16 Dec 2009
Verified Purchase
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.
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47 of 47 people found the following review helpful
1.0 out of 5 stars Wildly inaccurate 7 July 2009
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.
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16 of 16 people found the following review helpful
I second what the previous reviewer said - this item is completely inaccurate. With the outdoor sensor place next to the item itself it gives a completely different reading to the indoor sensor. If you reset the device, you get a different temperature reading every time.

Wouldn't bother buying this device unless you only wanted a very rough idea of what temperature it is.
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56 of 58 people found the following review helpful
1.0 out of 5 stars dont buy this 9 Jan 2010
Verified Purchase
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,
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10 of 10 people found the following review helpful
1.0 out of 5 stars thermometer 1 Jun 2010
Verified Purchase
it said it was 80' when it was clearly only in the low 60's - checked it against another thermometer and it was widely out.it was returned as unfit for purpose.
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3 of 3 people found the following review helpful
1.0 out of 5 stars very disappointing 14 Feb 2011
Don't ignore the other one star reviews - this is a sadly disappointing bit of kit.
I've got one of these for my greenhouse and allotment and have been carefully recording the temperatures
I thought there was something odd about the readings when the indoor one went down to -10 and the outdoor only to -7
so i've been testing with both bits right next to one another on a shelf in the greenhouse. and it keeps happening - and it happens at the other end of the scale too. indoor bit gets to 26 and outdoor bit goes up to 30
so it doesn't really tell you much more than generally if it is cold cool warm or hot. and you probably knew that already.
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2 of 2 people found the following review helpful
4.0 out of 5 stars cheap dual temp thermometer 8 July 2009
By d
I bought this thermometer with some trepidation as I didn't know if the outside temperature probe wire would go through my windows without being split. As it turns out most double glazing windows have a rubber seal around the frame. This seal has enough give to safely allow the outside probe wire to pass through.

Onto the product, I like it. I have found the temperatures accurate, but don't place in direct sunlight. It doesn't come with a AAA battery but I had some lying around. The best thing is being able to compare both inside and outside temperatures.
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2 of 2 people found the following review helpful
4.0 out of 5 stars good product 24 Jun 2009
By dzey
Works great and is pretty accurate. The only problem is that it's wired so you need to stack it somehow through window frame (drilling hole?) and the the cable is ended with small metal cylinder, so it can't be exposed directly to the sun, as it will heat up and give you wrong indications.
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Most Recent Customer Reviews
4.0 out of 5 stars thermometer
Very useful gadget. My husband is always complaining about being cold and saying it is me and that the house is cold. Read more
Published 11 days ago by M C.
4.0 out of 5 stars Good product
Very good product I choose because someone recommended to me and was not a mistake to buy it so I will recommend as well
Published 1 month ago by Paula Neagu
5.0 out of 5 stars handy
this one we use indoors, we are O A P S so need to now how warm the house is very neat item well worth the money
Published 1 month ago by Dorothy C.
5.0 out of 5 stars thermometer
great idea as it lets you know how much heating you have in the house especially if you are getting older and don't realise that you should put your heating up slightly.
Published 2 months ago by sheila mcdonald
1.0 out of 5 stars It didn't work accurately
It was useless because the temperature reading was seriously high.
I threw it in the bin because I couldn't be bothered to return it. Read more
Published 3 months ago by Malcolm K Best
2.0 out of 5 stars poor display makes one question the accuracy of the device
It works but just how accurate it is may be open to debate. And for most people getting the probe outside might prove difficult. Buy a remote probe version instead.
Published 4 months ago by jack russell
5.0 out of 5 stars Best Product and recommended
Bought this product and very much impressed with the price. I didn't try various other options like Alarm and other options. Does the job.
Published 4 months ago by Giri
3.0 out of 5 stars Good for simple
I have it sitting on a shelf in my utility room that doesn't have a huge amount of warmth in the winter. Read more
Published 4 months ago by DW Kendall
5.0 out of 5 stars Great gadget
It's great to know the temperature outside and inside as I have a baby I need to know the room temp but also need to know how much I need to wrap him up when we are going out.
Published 4 months ago by Gillybaby7
5.0 out of 5 stars Great wee gadget
I look at this every day before I leave the house just to check how many layers to put on, it's a brilliant gadget
Published 5 months ago by M. Herbert
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