Product · United States

Precision luminance photometers monitor the average brightness of the tunnel entrance and its surroundings.

Product no longer available. The stores we track no longer sell it; last price seen $3,201.

Price history: 6 daily prices tracked since 2026-10-18; lowest $3,191, highest $3,201.

Precision luminance photometers monitor the average brightness of the tunnel entrance and its surroundings.

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