Shower drain assemblies and their components are disclosed. In some examples, a shower drain assembly may include a shower drain, a retaining ring, a sealing ring assembly, or a combination thereof. The retaining ring may fit inside the shower drain, and the sealing ring assembly may fit inside the shower drain and on top of the retaining ring. In some other examples, a shower drain assembly may include a shower drain, a gasket, a compression ring assembly, or a combination thereof. The gasket may fit inside the shower drain, and the compression ring assembly may fit inside the shower drain and on top of the gasket. The shower drain assemblies may allow for fluid pressure testing of shower drain and pipe assemblies. The shower drain assembly may allow for fluid pressure testing of areas not previously tested or a lack of a need for caulking, among other improvements.

A power and communications system associated with a plumbing fixture and which is connected with an external electrical power source. The system includes a power and communication assembly having electrical circuitry adapted to be electrically connected with the external electrical power source and provide electrical power to the power and communication assembly. The electrical circuitry can also be coupled with a plurality of peripheral devices. The power and communication assembly includes a transceiver in communication with the electrical circuitry and adapted to transmit and receive messages with an external communication network and a communication router in communication with the transceiver and adapted to be communicatively coupled with the plurality of peripheral devices. The plumbing fixture is coupled with the power and communication assembly and is adapted to be operably coupled with the plurality of peripheral devices. The plumbing fixture may take the form of a sink or a shower panel.