Amazon.com: 19mm Waterproof Metal Push Button Switch LED Light Black Momentary Latching Auto Car Engine PC Power Switch 3V 5V 12V 24V 220V - (19mm Black Ring/Voltage: 12-24V/ : Red LED/SD: Latching) :
Genesis Series Wall Switch | Touch-Plate's Low-voltage Contact Closure
Pololu - Mini Pushbutton Power Switch with Reverse Voltage Protection, LV