WAC 212-10-025. Conformance with nationally accepted standards

All smoke detection devices shall be designed, manufactured, and installed in conformance with the requirements of Underwriters Laboratories, Inc. Standard UL 217 or codes adopted by chapter 19.27 RCW, and shall be approved or listed for the purposes for which they are intended. Exception: Smoke detection devices in dwelling units built or manufactured in this state after December 31, 1980, shall receive their primary power from the building wiring when such wiring is served from a commercial source. Wiring shall be permanent without a disconnecting switch other than those required for overcurrent protection.