What type of recovery device captures refrigerant in a non-pressurized container for small appliances?

A system-dependent recovery device, often referred to as a passive device, is designed to recover refrigerant from appliances that do not have a significant amount of working fluid or pressure. These devices operate by relying on the pressure within the system to push the refrigerant into a non-pressurized container, typically used in small appliances like household refrigerators or window air conditioners.

In such cases, the device utilizes the existing pressure in the refrigeration system to transfer the refrigerant. This is particularly effective for smaller systems where the refrigerant can be captured without requiring a more complex active mechanism. The non-pressurized container allows for safe storage of the recovered refrigerant, which is crucial for complying with environmental regulations regarding refrigerant handling and disposal.

The other options do not apply to small appliances in the same manner. Active recovery devices are designed to remove refrigerant under vacuum or high-pressure conditions, while high and low-pressure recovery devices refer to systems dealing with larger or more varied refrigerant systems, which would not be applicable in the context of small appliances.