attention sign: caution, authorized personnel only - safety warning board for restricted areas

authorized personnel warning sign attention safety restricted access danger notice board security protection area hazard precaution signage alert message restrictedarea workplace warningsign restrictedaccess safetysign noentry dangersign safetymeasure cautionboard personnelonly warningboard signageboard safetywarning restriction workplacesafety restrictedsign noticeboard protectionboard safetyalert attentionboard restrictednotice securitywarning authorizedentry hazardalert safetycaution warningmessage dangernotice noaccess hazardnotice