Can be combined with LED dimmers 6524 U and 6526 U, Busch universal touch control unit 6550 U-10x, Busch memory touch dimmer® 6560 U-101, Busch universal dimmer® 6593 U, Busch universal relay insert 6401 U-10x, Busch universal series insert 6402 U. Compatible with previous model 6543-xxx. Touch control unit 6550 U-101 cannot be illuminated. Replacement glow lamp item no. 3857.
