Before touching any wires, always turn off the circuit breaker feeding the PC Panel Bakelite Back Electrical Light Wall Switch. Once power is confirmed off with a tester, remove the old device and prepare to mount the new PC Panel Bakelite Back Electrical Light Wall Switch. Begin by stripping 10 mm of insulation from each conductor that will connect to the PC Panel Bakelite Back Electrical Light Wall Switch. Insert the line conductor into the L terminal of the PC Panel Bakelite Back Electrical Light Wall Switch and tighten firmly; repeat for the load wire in the opposite terminal of the PC Panel Bakelite Back Electrical Light Wall Switch. If your setup includes a third conductor for two-way switching, attach it to the COM terminal clearly marked on the PC Panel Bakelite Back Electrical Light Wall Switch. The generous wiring tunnels inside the PC Panel Bakelite Back Electrical Light Wall Switch prevent overcrowding, but still fold the wires neatly so the PC Panel Bakelite Back Electrical Light Wall Switch sits flush against the wall box. Secure the PC Panel Bakelite Back Electrical Light Wall Switch using the supplied screws; their thread design grips the bakelite back of the PC Panel Bakelite Back Electrical Light Wall Switch without stripping. After mechanically fastening the PC Panel Bakelite Back Electrical Light Wall Switch, install the polished PC faceplate by aligning its clips with the rear housing of the PC Panel Bakelite Back Electrical Light Wall Switch until you hear a click. Restore power and test the PC Panel Bakelite Back Electrical Light Wall Switch by toggling it several times; the crisp action of the PC Panel Bakelite Back Electrical Light Wall Switch should feel identical to premium hotel switches. If illumination is reversed, simply exchange the wires on the PC Panel Bakelite Back Electrical Light Wall Switch because the PC Panel Bakelite Back Electrical Light Wall Switch supports polarity-free hookup. For dimming applications, pair the PC Panel Bakelite Back Electrical Light Wall Switch with an upstream LED controller; the robust contacts inside the PC Panel Bakelite Back Electrical Light Wall Switch handle inrush current up to 120 A without pitting. Remember that the IP20 rating of the PC Panel Bakelite Back Electrical Light Wall Switch is intended for indoor dry locations; never install the PC Panel Bakelite Back Electrical Light Wall Switch inside a shower enclosure unless placed in a waterproof box. When retrofitting older homes, the shallow 25 mm depth of the PC Panel Bakelite Back Electrical Light Wall Switch often fits existing masonry boxes where bulkier hardware cannot. Finally, add a label strip on the terminal cover of the PC Panel Bakelite Back Electrical Light Wall Switch for quick circuit identification during future maintenance.