The Swell UV Sensor card can measure UV radiation accurately in 10 seconds, just hold the card underneath to see what level is being emitted, low, medium or high. This is a great too for ensuring that you have the correct environment for your reptile, keeping them in their best set up, meaning they stay happy and healthy.
This card can be used to check an old bulb is still functioning properly, making sure the UVB level hasnt dropped too much, and making sure your bulb is still usable for your species. This means you can get the best lifespan of each bulb you have, and you're not wasting money buying a replacement when not entirely necessary.
Similarly, this card is great for checking new bulbs, ensuring you're happy with the output of your chosen brand. This can ensure that if you've picked a strip bulb, a compact or a combined mercury vapour bulb, that its the right choice by the output its giving to your reptile.
Finally, this card is ideal to ensure that the location of your bulbs and hides and basking spots are correct. It might well turn out that your perfect basking spot is two inches higher than you've currently got it, or where your reptile loves to sit is too low for the bulb you have, so going up a level of UVB might make all the difference to their health and happiness - these cards mean you can be sure that everything is in perfect position.
Simple to use, just place under the bulb (not touching) and get the reading, ideally in the location that your reptile is actually sitting in, or the distance they tend to be from the bulb. This gives you an accurate idea of what they are receiving, showing you the level within 10 seconds of being placed under the bulb. Just move it away and leave for 1 minute for it to reset, and then can be used again. Each card can be used 500 times in 10second uses, and there are 3 per pack!