DTSM-31N-V-T/R is a type of tactile switch manufactured by Diptronics. It is a surface mount, vertical actuation, momentary, off-on switch, also known as a “tact” switch. This switch is typically used in applications such as momentary pushbutton switches, panel-mounted rocker switches, and speaker circuit boards. This switch is rated for 0.05A at 12VDC, and has a travel distance of 0.15mm. The actuator type is N style, while the actuation force is 31 gf (gram-force). The switch is made of thermoplastic with matte tin-plated contacts. It has four terminals, with a vertical orientation.