Hi I have this device. https://drive.google.com/file/d/0B02XStLWj3XLOTE2a0k5RVFhZ0VIMnZyMm5tRzdOVy1hemVv/view?usp=sharing https://drive.google.com/file/d/0B02XStLWj3XLdzRsX3J0bktQMW1OUHNfLWctX3MtS0JLOVcw/view?usp=sharing https://drive.google.com/file/d/0B02XStLWj3XLT3NDMWZKcGR6WXlhZDlsMzlkalFJQVpuVFM4/view?usp=sharing Call me overcautious, but since it is a cheap device and it has no known reference (even their website does not work), I started to have second thoughts after the first use. Is there any tiny teeny possibility that a leak will flow into the water (hence the user!)? I know these things -typically- has an extra measure regarding the safety, but do I really know?!