Abstract: In one aspect, a system for recharging a refrigeration system of a vehicle is provided. The system includes a refrigerant delivery device configured to removably couple to a recharge port of the refrigeration system. The refrigerant delivery device comprises a controller, a refrigerant container, and at least one sensor. The controller is configured to communicatively couple with User Equipment (UE) of a user over a communication channel. The refrigerant container stores a refrigerant. The at least one sensor is configured to measure one or more parameters of the refrigeration system. The controller is configured to transmit, via the communication channel, the one or more parameters of the refrigeration system to the UE, receive, via the communication channel, one or more commands from the UE to perform a recharge process for the refrigeration system, and selectively deliver the refrigerant to the refrigeration system in response to the one or more commands.

Abstract: A foam sprayer includes a body defining a channel, a nozzle, and an adapter configured to releasably attach to a first fluid source that provides a first fluid at a first pressure. The foam sprayer includes a connector attached to the body and configured to releasably connect the body to the adapter or to a second fluid source that provides a second fluid at a second pressure that is substantially greater than the first pressure. The foam sprayer also includes a mode selection device configured to switch the foam sprayer between a low-pressure mode and a high-pressure mode. The foam sprayer is configured to generate foam from the first fluid when the foam sprayer is in the high-pressure mode. The foam sprayer is configured to generate foam from the second fluid when the foam sprayer is in the high-pressure mode.