Abstract: A wireless signal is propagated via a communication channel and received by a vent stop. The vent stop, upon receiving and decoding the signal, conducts an electric current to release the vent stop from a plumbing vent. In one embodiment, an intralumen audio signal is communicated to the vent stop and an adhesive joint securing the vent stop to the vent pipe is released upon passing an electric current through the joint. In one embodiment, an electric motor or solenoid releases the stop from the vent pipe. A spring or other energy storage device ejects the stop from the vent pipe following release.