1、Infusion reminder device equipped with smart sensor can monitor the change of fluid in infusion tube in real time. It is suitable for infusion tube of various kinds of liquid, blood, nutrient liquid, various materials and colors. 2、Light and convenient: the weight is 14 g / 0.5oz(approx.), and the impact on the infusion tube is minimal. 3、Built‑in lithium battery, effective storage life of 5 years, can easily continue to use more than a year, if intermittent use can be used for several years (pay attention to dry storage). 4、Sensitive and accurate, detection sensing technology, detection more accurate and stable. 5、Optimize one‑handed operation and structure designs, and improve the portability and fastness of the product. 6、Clear and bright warning sound, properly improve the sound volume stability, so as to achieve better alarm effect. Condition: 100% Brand New Item Type: Infusion Fluid Alarm Material: ABS Optional Color: Yellow, White, Red, Pink, Blue, Green Size: Approx. 5.7 x 3.1cm / 2.2 x 1.2in Built-In Battery: lithium battery, 100mAh Usage: Charge the battery before use 1. On: Clamp the reminder to the infusion tube, press the "on" button to hear the starting prompt and enter the detection state with the green light flashing at the same time. 2. Voice switch: Long press for 3 seconds in the state of shutdown. When you hear the sound of "di", release the button to switch voice successfully and turn it on to enter the detection state. 3. Reminder: when the liquid in the infusion tube changes from there to no change, the prompt sound is issued, and the red light flashes at the same time. 4. Power off: Press the "on" button, the power off prompts the stereo, and all the indicators are off to stop working. 1 x Infusion Fluid Alarm 1 x Charging Cable