Two-Way Operation: Allows each circuit to be switched from two different locations (ideal for stairs, hallways).

Finish / Material:
Matt black finish common.

Electrical Rating:
Rated for 10 A at 220-250 V AC.

Design:
Slim, low-profile plate design with smooth edges (modern style).
Backed-out captive screws make wiring easier.

Durability
Built to last: many rated for tens of thousands of on/off cycles.
Contact materials often copper / alloy for good conductivity.

Installation:
Requires a standard back box; some specify a minimum box depth.
May have terminal capacity to take multiple wire sizes.