Lux Light Meter With Waterproof Probe Model SM700 UNDERWATER LIGHT METER NEW! User can select 3 ranges: 0.00 — 1999 Lux, 2000 — 19999 Lux or 20000 TO 50000 Lux. The range setting through key buttons. Resolution of 1 Lux / 10 Lux / 100 Lux with accuracy of +/- 6%. The peak wave is 560 nm with silicon photo diode sensor. 9 Volt battery — 150 operational hours. Drop ship.  | Manufacturer's Product Information |  | | | |
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