A button transmits a signal to another device, causing it to go from on to off or vice versa. The push-button switch may perform necessary functions start, stop, forward and backward rotation, speed adjustment, and interlock. A Push Button switch operates on a primary mechanism known as Push-to-Make. It is initially in the off or generally open position, but when pressed, it permits current to travel through it, or we may say it completes the circuit. Push/pull button switches are for applications where the ability to control a switch by pushing or pulling a knob. Key Features: Has mounting bushing of 3/8 inches The first pull activates #1. The second pull activates both circuits. 15 amps @ 12 volts DC SPDT switch positions are off-on(1)-on(1&2) Chrome-plated brass and solid brass knob Has three-blade terminals Designed for maximum use Product Specifications: Brand: SeaStar Solutions SKU: MP39590 UPC: 808282368111 Weight: 0.20 LBS Switch Type: SPDT Terminal: SPDT Material: Brass Item Dimensions: 3.18 x 1.75 x 6.81 inches Color: Chrome Manufacturer Part Number (MPN): MP39590 Replaces Products: 49-39591, 49-39590, MP3959, MP39592, 808282368111, 11-MP39590, 2312139590 Switch Positions: Off-On(1)-On(1&2) SPDT, First pull energizes #1, Second pull energizes both circuits, Solid brass construction w/ Chrome plated brass knob, 3 blade terminals