Energy-Harvesting Switches Meet 2023 NEC Specification
The National Fire Protection Association (NFPA) 70: National Electrical Code (NEC) benchmark for electrical design safety has added new measures against battery failure:
“Lighting outlets shall be installed where specified in 210.70(A), (B), and (C). The switch or wall-mounted control device shall not rely exclusively on a battery unless a means is provided for automatically energizing the lighting outlets upon battery failure.”