[Parameter specification] Lamp switch limit voltage specification is 250V, current limit is 2A, contact resistance: 20 and insulation resistance: 200M. This switch is suitable for low-voltage, low-current household appliances with LED circuits, such as desk lamps, bedside lamps and small fans. Matte texture and concave design: According to the comfort of human fingers, the black surface of the middle switch has a concave "arc". The bottom is flat. As a result, the hand is comfortable and does not get tired when holding the switch. The matte design is not only non-slip, but also does not leave visible fingerprints. [Applicable cable diameter] The diameter of the cable entering the two ends of the cable switch of the light switch is 1.5mm2, suitable for cables with a cable diameter of 1.5mm2 suitable. Please confirm the installation wire size before purchasing this switch. Easy Screwless Installation: The center rocker switch has a "snap-on" design, which can be turned on and off without a screwdriver. Wrap the wires around the metal prongs at both ends of the switch and use a hammer to combine the switches for better closure. Wide Usage: The black 2 pin center switch is not only for most office lamps, small fans and LED circuits, and other micro-voltage / micro-current household appliances. It can also be used for school teaching materials.