100% brand new and high quality Features: 3 in One: It can measure the fish tank water temperature/room temperature/humidity, the refresh frequency is 12s. High accuracy: The high-accuracy probe directly measures the water temperature with precision and small error. High and Low Temperature Warning: Set the high and low temperature threshold independently, and automatically alarm when the threshold is exceeded. Digital Display :Pure transparent screen, high-definition digital display screen, different visual experience. Practical and Battery Powered: The body and the water temperature probe are separated in design, which is more convenient and easy to disassemble. The battery cover design makes it easier to replace the battery With Buttons: Button design, easy setting of water temperature meter parameters. Aquarium Thermometer Set only,other accessories demo in the picture is not included. Specification: Room temperature measurement range: -20~85, error 0.3 Humidity measurement range: 0~100%, error 2% Water temperature measurement range: -10~50, error 0.5 Material: ABS Size: app.12.6x7.5cm/4.96x2.95in Color: White Battery: Built in CR2032 Button Battery 3V Quantity: 1 Set Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 x Aquarium Thermometer 1 x Probe Cable 1 x Hook 1 x Double-sided Adhesive