Circuitron has been making model railroad electronics in Romeoville, Illinois since the 1970s — the company every serious modeller goes to for grain-of-wheat lamps, the famous Tortoise slow-motion switch machine, signal detection circuits, and Optical and DCC accessory boards. If your layout has signals or under-table turnout drives, Circuitron is probably part of it.
We stock Circuitron's lamp and lighting lineup heavily: the 7400 Sub-Micro Lamp 0.75mm at 1.5V/18mA in 2-, 6- and 12-packs (the smallest practical filament bulb for locomotive headlights and marker lights), the 7411 Standard-Output 1.4mm Grain of Wheat lamp in 2- and 12-packs (the workhorse for building interior lighting), and the 7414 Medium-Output 1.4mm Brighter Grain of Wheat in 2-, 6- and 12-packs (when you want more light without going to LED). All are 1.5V incandescent bulbs that wire easily and dim with simple resistor-based circuits.
Circuitron's Tortoise switch machine (model 800) is the slow-motion stall-motor turnout drive that quietly throws turnouts at scale speed and provides built-in SPDT contacts for frog polarity and signal control. Pair Circuitron lamps with Sound & Lighting for Just Plug LEDs, and DCC & Electronics for the broader infrastructure. Ships from Oakville, Ontario. Free shipping on orders over $250.
