Devices, systems, and methods for communicating with rooftop air handling units and other hvac components

A device for communicating information from a controller for a rooftop air handling unit to a portable electronic device, the device comprising:

• a wire terminal for wiring to the controller for the rooftop air handling unit and for receiving a signal comprising information from the controller for the rooftop air handling unit, wherein the wire terminal is a part of the device and is not a part of the controller and is not a part of the portable electronic device;
• a transceiver configured to form a direct wireless communications link between the transceiver and the portable electronic device, wherein the transceiver is configured to wirelessly transmit the information directly to the portable electronic device via the direct wireless communications link, wherein the transceiver is not a part of the controller and is not a part of the portable electronic device;
• and
• a circuit coupled to the wire terminal and the transceiver, the circuit configured to extract the information from the signal according to a communications protocol compatible with the controller for the rooftop air handling unit, the circuit further configured to provide the information from the wire terminal to the transceiver, wherein the circuit operates the wire terminal and the transceiver to cause the device to serve as a wireless communications bridge between the controller for the rooftop air handling unit and the portable electronic device,
• wherein the circuit is configured to format the information into a format in which the information can be presented to a user by the portable electronic device and to provide the translated information from the transceiver directly to the portable electronic device via the direct wireless communications link.