EMS Pioneer

The Air Sentinel is a Breathing Air Monitoring System which has been designed especially for use on aerial devices. It has a 5-digit LED display to show pressure and 11 LEDs that indicate the percentage of air remaining in the bottle. It provides both audible and visual low air warning alarms.
Air Sentinel是专为航空设备上使用设计的呼吸空气检测系统。它有一个5位数的LED显示器显示压力，和11个用于表示瓶内残余空气百分比的LED灯。具有听觉和视觉低气压警告。