MSA 10077112 Transparent Nomex Impact Cap Assembly with Quick Release Postman's Slide Chinstrap for Cairns 1010 Traditional Helmet, Clear Transmit firefighter's name, team assignment, cylinder pressure, service-time remaining, PASS alarms (motion or manual), thermal alarms, battery status, radio connectivity, and evacuation acknowledgement Each base station can monitor up to 50 firefighters Intuitive and easy to use Two-way evacuation feature