... card cabinet lock,exquisite apperance ,can be used for the handle,two open door solution,emergency power supply ... faceplate: 58*50 *13(mm)Power:6V(4 5# AAA battery)Warning voltage:<5V(working)Static current:<25uA ... 15°C—65°C Working humidity:≤95%Warning voltage:5.0VUsing field Swimming pool , sauna bathing spot,golf ... storage cabient,etc EM card cabinet lock for sauna center,school,office (LK-EM528S)