IMPORTANT! If you’re a store owner, please make sure you have Customer accounts enabled in your Store Admin, as you have customer based locks set up with EasyLockdown app. Enable Customer Accounts
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Measures visible light transmission (VLT) on roll down windows.
Features a backlit LCD display making it much easier to read in low light conditions. Reads to the nearest tenth percent for greater accuracy. Calibrated to a NIST traceable standard.