Idec surface mount indicators lh1d flat series idec lh1d h2hq4c30y the idec lh1d h2hq4c30y is a flat lens yellow spider light from the lh1d series this surface mount indicator is slim and stylish and is easily mounted with two screws directly onto the surface of control panels switch cabinets or machine parts maintaining excellent visibility from the front and the side the lh1d spider light can be used in various applications that do not have space behind the panel these include robotic