Powered wall plate with keyed interface

1. A powered wall plate, comprising:

a face plate configured for mounting on an electrical receptacle, the face plate comprising an opening extending through the face plate configured to expose the electrical receptacle when the face plate is mounted on the electrical receptacle;

a first keyed interface extending rearward of a rear surface of the face plate and configured to mateably couple with at least a second keyed interface on a face of an electrical receptacle;

spring-biased terminals coupled to and extending rearward of a rear surface of the face plate and disposed at opposing sides of the opening, wherein the spring-biased terminals are configured to couple to terminal screws disposed on opposing sides of the electrical receptacle;

a printed circuit board (PCB) coupled to the face plate and the spring-biased terminals; and

wherein the powered wall plate is configured to supply power to a powered feature of the powered wall plate through the spring-biased terminals, the powered feature coupled to the PCB, wherein the powered wall plate is configured to receive electrical power from the spring-biased terminals only when the first keyed interface is mateably coupled with the second keyed interface.

2. The power wall plate of claim 1 , further comprising the electrical receptacle.

3. The powered wall plate of claim 1 , wherein the first keyed interface and the second keyed interface are mechanically and electrically coupled to each other to provide a desired connection between the first and second spring-biased terminals and the first and second to terminal screws, respectively.

4. The powered wall plate of claim 1 , wherein the powered feature comprises at least one of: a USB port, a night light, a camera, or a carbon monoxide detector or smoke alarm.

5. The powered wall plate of claim 1 , further comprising a warning indicator configured to indicate a safe connection from the mated coupling of the first keyed interface and the second keyed interface.

6. The powered wall plate of claim 1 , further comprising an indicator light coupled to the circuit board and visible at the front surface of the face plate, the indicator light configured to be illuminated when the first keyed interface and the second keyed interface are not mateably coupled to indicate to a user that the spring-biased terminals are improperly coupled to the terminal screws.

7. A powered wall plate, comprising:

a face plate configured for mounting on an electrical receptacle, the face plate comprising an opening extending through the face plate;

a first keyed interface extending rearward of a rear surface of the face plate and configured to mateably couple with at least a second keyed interface on a face of the electrical receptacle;

spring-biased terminals coupled to and extending rearward of the face plate, and configured to couple to electrical terminals disposed on sides of the electrical receptacle; and

wherein the powered wall plate is configured to supply power to a powered feature of the powered wall plate through the spring-biased terminals only when the first keyed interface is mateably coupled with the second keyed interface.

8. The power wall plate of claim 7 , further comprising the electrical receptacle.

9. The powered wall plate of claim 7 , wherein the first keyed interface and the second keyed are mechanically coupled, electrically coupled, or both, to each other to provide power to the powered feature.

10. The powered wall plate of claim 7 , wherein one of the first keyed interface and the second keyed interface is a boss or a magnet and the other of the first keyed interface and the second keyed interface is a switch.

11. The powered wall plate of claim 7 , wherein the powered feature comprises at least one of: a USB port, a night light, a camera, or a carbon monoxide detector or smoke alarm.

12. The powered wall plate of claim 7 , further comprising an indicator visible at the front surface of the face plate, the indicator configured to indicate to a user when the first keyed interface and the second keyed interface are not mateably coupled and the spring-biased terminals are improperly coupled to the terminals.

13. A powered wall plate, comprising:

a face plate configured for mounting on an electrical receptacle, the face plate comprising an opening, and at least a first keyed interface configured to couple with at least a second keyed interface on an electrical receptacle;

biased terminals coupled to the face plate and configured to couple to electrical terminals of the electrical receptacle; and

wherein the powered wall plate is configured to supply power to a powered feature of the powered wall plate through the biased terminals only when the first keyed interface is mateably coupled with the second keyed interface.

14. The powered wall plate of claim 13 , wherein the powered feature is configured to be in electrical communication with the biased terminals only when the first keyed interface and the second keyed interface are mateably coupled.

15. The powered wall plate of claim 13 , further comprising the electrical receptacle.

16. The powered wall plate of claim 13 , wherein the first keyed interface is configured to mateably couple with the second keyed interface mechanically, electrically, or both, to provide power from the receptacle to the powered feature.

17. The powered wall plate of claim 13 , wherein one of the first keyed interface and the second keyed interface is a boss or a magnet and the other of the first keyed interface and the second keyed interface is a switch.

18. The powered wall plate of claim 13 , wherein:

the first keyed interface and the second keyed interface comprise a tab and a recess that together form a first keyed pair, and

the powered wall plate further comprises a second keyed pair comprising a tab and a recess, the second keyed pair comprising a structure different from a structure of the first keyed pair such that the first keyed pair and the second keyed pair are not compatible.

19. The powered wall plate of claim 13 , wherein the powered feature comprises at least one of: a USB port, a night light, a camera, or a carbon monoxide detector or smoke alarm.

20. The powered wall plate of claim 13 , further comprising an indicator visible at a surface of the face plate, the indicator configured to indicate to a user when the first keyed interface and the second keyed interface are not mateably coupled and the spring-biased terminals are improperly coupled to the terminals.