We see what you don’t see, and it keeps a cool head when things get serious. The CERTAS multicall app enables you to alert everyone needed at the same time, such as company management, crisis units, technicians and your own employees, with a pre-recorded voice message. CERTAS multicall app – fast mobilisation of people and emergency services needed in a crisis Your benefits with the CERTAS multicall app – fast, user-friendly and secure: - Trigger mass notification/information at the push of