The ST-1185X is a 3*4 array of tactile switches, manufactured by RI SHENG. It is RoHS compliant, meaning that it does not contain hazardous materials that might be harmful to the environment. The switches are rated at 12VDC, and feature a mechanical life of 1,000,000 cycles minimum, with an electrical life of 100,000 cycles at 12Vdc. Operating temperature range is -40 to +85°C. The switch Includes 4 pins, including pins for power, ground, and two contacts. The button lifetime is about 500,000 cycles. This tactile switch is perfect for applications where a push-button action is required, such as with electronics, toys, and home appliances.