[Touch Screen & Energy Saving Mode]Built-in CR2032 button battery, which can be used for 24 months (depending on the usage). After 5 seconds of no operation, the wireless aquarium thermometer automatically enters the sleep mode, and it can be easily woken up by touching the power button, which is more environmentally friendly and energy-saving. [Wide Measuring Range & High Precision]The temperature measurement range of our fish tank thermometer is 32℉-140°F, the accuracy is 0.18℉, and the error is ±1℉, which can meet the needs of different water temperatures. The refresh rate every 5s can detect temperature changes faster. [Simple Operation & Wide Application]No installation tools are required, just peel off the tape and on the fish tank for use. There are no messy cables, and it can also prevent your fish from eating by mistake, which is safe and reliable. It is suitable for fresh water, tap water, salt water, sea water, etc., providing the most comfortable water temperature environment for your pets. [LED Display & Easy to Read]The high-definition LED display screen provides a viewing angle of up to 120°, which not only has a great advantage in the visual range, but also has good color saturation, which can avoid the problem that it is difficult to read the value under strong light or darkness. WIDELY COMPATIBLE & EASY TO USE: Our aquarium thermometer is easy to install - simply peel off the adhesive and on the outside of the tank, below the water level. It's suitable for monitoring the living temperature of fish, salamanders, , lizards, and other reptiles. color: White material: plastic Package Contents: 2 x Thermometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.