Miniature indicator light mostly used for control panels, switches and transportation applications such as trains, trolleys and boats. This halogen gas filled lamp offers a high intensity light source and longer life than standard incandescent lamps. The halogen cycle redeposits evaporated tungsten back onto the filament. This increases its life and maintains the clarity of the glass envelope. Use caution when installing halogen lamps. Be careful not to touch the glass because this will create a “hot spot” where the glass was touched and cause the lamp to burn out prematurely.