(R-795-3v) 1.8 mm bulb – 3 volt – $2.25 each
For use with a 3 volt battery or adapter – these 1.8 mm LED bulbs are good for 1/2″ and 1/4″ and 1/144″ scale pieces. However, you must have the correct wiring set up for the voltages you are using. The wiring is not interchangeable between the 3 voltages. These 3 volt LEDs are for 3 volt DC current only (coin battery, 2 – AAA, 2 – AA or if you have a 3 volt adapter). (Evan Design)