Stairs without handrails can hold induction lamp. 1. First, measure the length and width of the steps and the size of the channel lights. First, pull up from the projection floor at the corner, and extend the main line along the steps to the lowest step. 2. Put the cut tread on the steps, and then punch holes in the tread according to the steps. The number of openings depends on the actual situation, and the more the number, the more secure it is. Three screws are installed on the right side of the steps about 1 m, and four screws are generally installed on the steps larger than 1.2 m.. 3. Put the expansion bolt into the screw hole, and then fix the pedal with the tapping screw. 4. Connect the light bar wires, and then put the light bar into the light bar groove of the step bar. At this time, it is necessary to pay attention to the thread end of the light strip walking along the slot of the limiter and not being pressed by the position of the limiter, otherwise it is easy to break the wire. Install the lamp strip on the steps of aluminum profile, and then put the aluminum profile into the steps. 5. Insert the led light board into the plug and connect the power cord with the main line. If there is an led sign on the other side of the step, use a main line and install it on one side of the sign. If there are led lights on both sides of the steps, it is suggested that the left and right sides should be connected by main lines or power lines, and the led lights on the left (right) side should be connected to the main lines on the other side by = light strips. 6. Connect the wires of the left and right resistor heads and put them on both sides of the tread. Put the main line into the slot of the limiter, then put an expansion bolt in the screw hole of the limiter, and then fix the main line with self-tapping screws. 7. High and low battens should be installed on both sides of the horizontal and vertical direction. The main line should be hidden between the high and low battens, and special attention should be paid to the gap between the high and low battens.