... every ten seconds.5. Means of use:1) How to put battery : open the lip of bottom . ... , the indicator will become red , you should change battery6. Attention:1) Don't take it out ... Casually when using it in the summer, and change battery quickly. The outer shell and inner; parts ... Park, Gongming Town, Baoan District, Shenzhen, ChinaTrade Office: Unit 1211,Block A, Jiahe Huaqiang Bldg, Shennan Middle Rd ...