Abstract: A camera module configured to interact with a fastening holder, the camera module comprising including an image-capturing apparatus provided with an objective and a connecting connector for the transmission of images; a protective casing provided with a protective wall placed facing the objective, and a rear wall opposite the protective wall and lying substantially in a rear plane; a connecting arrangement configured to interact with the fastening holder in a mounted position, the connecting arrangement including a device for blocking the fastening holder in mounted position and a guiding profile for connecting an external connector to the connecting connector, the blocking device and the guiding profile extending beyond the rear plane transversely to the rear plane and in a direction opposite to the protective wall.

Abstract: Protective mask communication systems are provided for use in hazardous environments, e.g., firefighting and hazardous waste clean-up operations. The systems allow wearers of protective masks working in a hazardous area to readily communicate both with each other and with personnel and automated systems outside of the area. Preferred systems provide short range radio communication between mask wearers.

Abstract: An integrated safety and communication system for attachment to a standard type of firefighter's face mask includes a command post tracking and accountability monitor, and a mask attachment having means for transmitting the amplified voice of the wearer to anybody within its audible range, and to enable communications with the command post including identification, location, vital signs such as pulse and respiratory rate, vicinity temperature, hydrocarbon monitoring and alarm signal if the wearer becomes motionless for a predetermined time period.