The ATC 366B-400-Q-30PX Long Ranger Counter is a plug‑in 120 VAC counting timer from Marsh Bellofram’s ATC Series 366 family, used for timing and up/down counting with a visible display in industrial control circuits. It provides 0–999.9 seconds, supports three digit presets, and shows counts in an up/down configuration on the unit’s display, with a 50/60 Hz power input. This specific model is listed as discontinued by the manufacturer and has been superseded by the 366C-400-Q-30-PX, though distributors still list new or used stock; some listings note 16 screw terminals for wiring.
