MTH RailKing 10‑1037 Track Activation Device TAD – O/O‑27 Gauge – New in Box

Name: MTH RailKing Track Activation Device

Model Numbers: 10‑1037, MT‑1037, 20‑1037 (interchangeable)
Scale: O & O‑27 Gauge (3‑rail tubular track compatible)

A rugged single-pole/ double-throw track-powered contactor that detects passing trains to activate accessories like signals, grade crossings, lights, or switches.

🛠️ Details & Specs

• Operation:
  Slides under an O‑gauge tubular track section. When a train wheelset passes over, its weight triggers internal contacts to close, activating the device’s output circuit.

• Electrical Output:
  Switches 14–18 VAC accessory power. Best used with RailKing/Z‑4000 accessories but also compatible with most track‑side gadgets.

• Build Quality:
  Durable plastic housing, contacts rated for typical accessory loads. A reliable, hobby-grade, passive accessory trigger.

• Part History:
  Introduced in the mid‑1990s (~1996) and discontinued later, but still widely used and accepted by hobbyists