Suggestions for Temperature Monitor

[AndyH5512]

I am currently using two Coralife digital thermometers. Both give different readings which leads me to believe they are not as accurate as they should be. I would like recommendations for a more accurate unit to monitor temperature. Thanks.

[superedge88]

I've used these for years, flawless. You can get them on this website or at Target stores for around $9.00
http://www2.oregonscientific.com/shop/product.asp?cid=2&scid=5&pid=240