| Brand | Extech |
|---|---|
| MPN | 401021 |
Check the listing for details. Extech Light Adapter/Meter 401021. Condition: New – Open box. Listed at 40.00 USD. Extech Light Adapter/Meter to measure foot-candles/lux/lumens of existing office, classroom, churches. Used to measure lumens and foot-candles for video projector brightness requirement. Measure the foot-candles for ambient light projecting on to a screen. Estimate surface size of screen, square feet. Then you can calculate the minimum number of necessary projector lumens. NOTE: Standard Multi-meter is required. Instruction manual is included and room light recommended foot-candles chart.
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