1. Adopt advanced infrared body sensing technology. 2. No leakage,the liquid foam type each time was discharged 0.7ML, spray type was 0.3ML. It was professionally tested 200,000 times without leakage. 3. 1000ML large capacity adjustable liquid soap dispenser, adjustable in 2 files. 4. 3 model of liquid discharge methods, spray, drip, foam. 5. Automatic human hand sensing fluid to avoid secondary cross infection. 6. 100-240V Power version or 8x AA alkaline battery version.