2×4×1⅔ 9V Rotation Sensor (Part 2977)

1995-2000RETIRED

External Links

LEGO parts are described differently on other websites and may use different part numbers.

Bricklink:

2977c01 Electric Sensor, Rotation

Rebrickable:

2977c01 Sensor, Rotation

Brickset:

2977 Part not found on Brickset.

LDraw:

72632 Electric Brick 2 x 4 x 1.667 Sensor Rotation

ALL YEARS

OVERALL RANK

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Ranking based on buying one copy of every LEGO set, counting the number of sets containing each part, then sorting by part and color.

Overall Rank is a weighted score combining the number of parts, sets, and colors produced.

Printable LEGO Brick Label

Requires a compatible Brother Label Printer — learn more at brickarchitect.com/labels.

2×4×1⅔
Rotation Sensor
2977

.LBX

New Label! Not included in legacy LEGO Brick Labels collection.

2×4×1⅔
Rotation Sensor
2977

.LBX

Small QR codes are hard to scan with some devices.

Date Added: 2026-09-29 00:10:35
Date Modified: 2026-09-29 00:16:25

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2×4×1⅔ 9V Rotation Sensor (Part 2977)

External Links

Printable LEGO Brick Label

The LEGO Parts Guide is a work in progress

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