... 2,high quality 3,EM,ODM basin faucet with battery color change brass faucet without battery1,RoHS & CE2,high quality3,EM,ODM ... automaticallyC. When the water temperature is between 40c~49c, Red color will show automatically;D. When the water temperature is ≥53c ... , RED color will flash automatically. Remarks: 1.Self powered by water pressure ...