[Parameter specification] The limit voltage specification of the lamp switch is 250V, the current limit is 2A, the contact resistance: 20 Ω and insulation resistance: 200MΩ. This switch is suitable for low-voltage and low-current household appliances with LED circuits, such as desk lamps, bedside lamps and small fans. 【Matte texture and concave design】 According to comfort human fingers, the black surface of the middle switch has a concave "arc". The bottom is flat. As a result, the hand feels 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 both ends of the cable switch of the Light switch is 1.5mm2, suitable for cables with a suitable cable diameter of 1.5mm2. Please confirm the installation wire size before purchasing this switch. 【Easy installation without screws】 The central toggle switch has a "snap-on" design, which can be turned on and off without a screwdriver . Wrap the wires around the metal prongs on both ends of the switch and use a hammer to combine the switches for a better closure. 【Wide Use】The black 2 pin center switch is not only for most desk lamps, small fans and LED circuits, and other micro-voltage/micro-current household appliances. It can also be used for school teaching materials.