T350F 250W 1 gang dimmer switch,single pole T351F 250W 1 gang speed switch T352F 400W 1 gang dimmer switch,single pole T353F 250W 2 gang dimmer switch,single pole T354F 400W 2 gang dimmer switch,single pole T355F 500W 1 gang dimmer switch,single pole T356F 500W 2 gang dimmer switch,single pole