The WDGT SUPPLY SCBA is designed for entry into immediately dangerous to life or health (IDLH) atmospheres where air-purifying respirators provide insufficient protection. The 30-minute rated composite cylinder (4500 PSI working pressure) provides a practical work duration of 20–25 minutes at moderate exertion levels. The full-face mask provides a tight seal and unobstructed peripheral vision. An integrated heads-up display (HUD) allows the user to monitor cylinder pressure without breaking work posture. The audible PASS alarm activates automatically during periods of non-movement. NFPA 1981 certified.