What type of alerts indicate harmful cabin altitude levels in the Envoy 175?

Harmful cabin altitude levels in the Envoy 175 are indicated by a combination of visual and auditory alerts. These alerts serve to ensure that the crew is immediately aware of any dangerous conditions that might compromise passenger safety and comfort due to inappropriate cabin pressure. The visual alerts are typically displayed on cockpit instruments, giving pilots important information at a glance. The auditory alerts complement the visual indicators, often employing an alarm or other sounds to capture the attention of the crew during critical times, reinforcing the urgency of the situation. This dual alert system allows for a robust response to potential altitude issues, ensuring safety protocols can be enacted swiftly and effectively.