Description
The Circuitron 5522 BD-2HD Heavy Duty Block Detector is the heavy-duty version of the BD-2 — current-sensing block detector with Red / Green signal-driver outputs for higher-current blocks.
What it does: Same Red / Green 2-aspect signal-driving capability as the BD-2, but with beefier output transistors for situations where the block may hold multiple sound-equipped locos or many lighted passenger cars. Works with common-rail AC / DC / DCC.
- Detection method: Current sensing (heavy-duty)
- Output: 2-color (Red / Green) signal drivers — higher current
- Track power: Common-rail AC / DC / DCC
- Circuitron SKU: 5522 (Walthers 800-5522)
About Circuitron: A USA-made model-railroad electronics specialist (Maryville, Illinois) founded in the 1970s. Famous for the industry-standard Tortoise slow-motion under-table switch machine and its surface-mount cousin the SMAIL. The full range covers detection (block detectors, Opto-Sensor grade-crossing logic), automation (auto-reversers, external relays, twin-coil alternators), signal / lighting electronics (alternating flashers, ditch-light oscillators, strobe drivers), power supplies, and a complete set of Tortoise / SMAIL replacement parts plus the solderless ZipZ connection system. Most circuits work with AC, DC, or DCC track power unless specifically noted otherwise.
In stock at Oakville Model Trains Depot.