There with a strong sticker on the back, that you just need to tear off it and stick it on the outer of aquarium.
How to Use:
1. Tear off the sticker and stick to the outer glass of aquarium under the water level.
2. Please don’t put in the water, or else it will be damaged.
2 Colors available: Gold / Silver
Size: 7cm x 2cm x 1.5cm (2.8″ x 08″ x 0.6″)
Plastic & metal material
Order contents: 1 x Digital Aquarium Thermometer
High sensitive electronic sensors with precise chip, accuracy up to 0.1
Great tool for a body thermometer, aquarium thermometer, indoor and outdoor thermometer and more
Mini size and light weight, with a strong sticker on the back
Transparent crystal glass shell shape, fashion and elegant 3D perspective effect
Size: 7cm x 2cm x 1.5cm