abstract
| - Oz Kits allow humans to breathe on the airless surface of Elpis. It is a small device that is typically worn on the shoulder, and when it detects a drop in air pressure, it erects a small air-retaining forcefield bubble around the head of its wearer, thereby providing a portable supply of oxygen. Depending on the Oz Kit's O2 capacity, the air supply typically lasts between fifty seconds to three minutes. Once the air supply is depleted the bubble cannot retain itself, vanishing and leaving the wearer to slowly asphyxiate until more oxygen is found. There are a number of ways to replenish the limited supply of air an Oz Kit can hold, usually in such plentiful supply that even the most limited Oz Kit can sustain its air bubble for long periods of time. Sources of oxygen include air-dome generators that may be turned off or on as needed, oxygen vents that litter the lunar landscapes and oxygen canisters that restore 25 oxygen units that are frequently dropped by slain enemies or found within lootable objects. Oxygen vents are denoted on the mini-map and ECHO map by small blue diamonds and air-dome generators as denoted by an O2 symbol. When standing within an oxygen vent, an Oz Kit will keep its air bubble activated, but when within the pressurized areas of an active air-dome generator or an atmosphere, the bubble will disengage and the air supply will replenish itself from the ambient atmosphere. Oz kits also feature a pre-programmed voice notification system built into them. The voice activates to alert the wearer when they enter/exit an atmosphere, have lost half of their oxygen supply, and when the oxygen supply is depleted.
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