... :Wireless communication 3:Friendly software 4:High waterproof 5:led cross signs LED Pharmacy Cross DisplaySpectification1:Many Size(40cm,60cm,80cm,100cm ... ,10% to 90%RHCertification:CE &ROHSImportant Feature*Can display current temperature,humidity time,date,graphics,animatons (incuding GIF fromat) and free ... display.or he can aslo modfiy them before display Full Color LED Pharmacy Cross Signs