Product Name : Micro-Switch;Voltage & Current : AC 125V 5A;Contact Type : SPDT 1NO 1NC 1COM Action Type : Momentary;Actuator Type : Hinge Roller Lever;Terminal Type : 3 Pins Overall Size(Pin not included) : 20 x 6 x 10mm / 0.8 inch x 0.2 inch x 0.4 inch (L x W x H);Hinge Roller Lever Length : 18mm/0.7 inch;Roller Diameter : 4.5mm/0.2 inch Mounting Hole Dia. : 2mm / 0.08 inch;Mounting Hole Spacing : 9mm/ 0.35 inch;Material : Plastic, Metal Color : Black, Red, Silver Tone;Net Weight : 44g These Micro-Switches features Single Pole Double Throw (SPDT) Type, 1NO + 1NC Contact, Momentary Action, Hinge Roller Lever Actuator, 3-Pin Terminals, etc. Easy installation and long using life. Widely used in electronic equipments, Microwave Micro-Door/Oven/Refrigerator Interlock / Switch etc. In snap action contacts, the movement of the actuator applies force to an overcenter mechanism. This mechanism creates a quick change in contact state when the trip point is reached. Reversing the motion of the actuator to a given reset point causes the contacts to snap back to their original position. Snap action contacts have different trip and reset points. The distance between the trip and reset point is called the travel to reset, hysteresis, or differential. Finite travel to reset helps to avoid multiple changes of state if the object actuating the switch is subject to vibration. Snap action contacts repeatable performance in applications that involve low speed actuators. The amount of travel of the contacts is also not dependent on the amount of travel by the actuator. Package Content : 20 x Micro-Switch Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.