1、Micro optical infrared sensor water filler, automatically checks and self-service fill water level. 2、Automatic detection, external alarm, abnormal alarm, water pump linkage. 3、Simple and mini size, small body big function, convenient and practical. 4、Built-in strong magnet, strong adsorption, can clip 30mm thickness object. 5、Automatic detection, sound and light alarm, beeping and lighting dual alarm. Features: 1. Micro optical infrared sensor water filler, automatically checks and self-service fill water level. 2. Automatic detection, external alarm, abnormal alarm, water pump linkage. 3. Simple and mini size, small body big function, convenient and practical. 4. Built-in strong magnet, strong adsorption, can clip 30mm thickness object. 5. Automatic detection, sound and light alarm, beeping and lighting dual alarm. 6. Used for fish tank water filling, automatic water filling, no need for human operation. Specification: Condition: 100% Brand New Item Type: Infrared Fish Tank Water Filler Material: Plastic Color: Black Suitable for: Fish Tank Tip: Blue display light: (non-water fill state) will remind you that when the intelligent water filler detects that the next abnormal water fill cycle is twice the previous cycle, it will send an alarm. For example, if the last abnormal alarm was 13 hours ago, and the next abnormal alarm is 26 hours later, it will notify you. Filling Water Cycle 5 Hours 12 Hours 13 Hours 15 Hours 20 Hours Secondary Non-water Fill Alarm Cycle >24 Hours >24 Hours >26 Hours >30 Hours >40 Hours Note: after the first water filling, the intelligent water filler will send out a buzzer alarm if there is no automatic water filling at the interval of 48 hours. Red display light: (overwater alarm) will remind you that when the controller detects that the water fill time is three times longer than the last water fill time, it will alarm. For example, the last water fill time is 10 seconds, and the alarm will be sent when the water fill time exceeds 30 seconds. Filling Water Time 4 Seconds 5 Seconds 10 Seconds 15 Seconds 25 Seconds Secondary Filling Water Time(At Least 15 Seconds Apart) >15 Seconds >15 Seconds >30 Seconds >45 Seconds >75 Seconds Note: there is no time interval limit for the first water filling. Package List: 1 x Infrared Sensor 1 x Locator 1 x Power Adapter 1 x Micro Pump 1 x Acrylic Water Pipe Clamp 1 x 2m Water Pipe