ZMQ20 DLI Light Meter – 24-Hour Automatic Daily Light Integral Meter, Sunlight Classifier for Plants, Stores 9 Days Data, Outdoor Weather-Resistant Garden Light Monitor

ZMQ20 DLI Light Meter – Know Your Daily Light The ZMQ20 DLI Meter measures Daily Light Integral (DLI), the total amount of photosynthetically active light plants receive in a 24-hour period. Unlike traditional instant light meters, ZMQ20 automatically accumulates light throughout the day and provides a clear daily DLI value. With a range of 0–99 mol/m²/day, it helps gardeners, landscapers, and plant enthusiasts understand whether their plants receive full sun, partial sun, or shade conditions. Key Features: 24-hour automatic accumulation Displays up to 9 days of stored data Outdoor weather-resistant housing Simple one-button operation Clear LED display AAA battery powered Ideal for gardens, lawns, flowers, vegetables, shrubs, and landscape planning.

• Accurate 24-Hour DLI Measurement. Measures Daily Light Integral from 0–99 mol/m²/day. Automatically accumulates light in a full 24-hour cycle without needing manual power on/off.
• Sunlight Classification Guide. Built-in DLI reference helps classify: Full Sun (>20 mol/m²/day). Partial Sun (15–20 mol/m²/day). Partial Shade (10–15 mol/m²/day). Full Shade (<10 mol/m²/day). Perfect for plant placement decisions. Perfect for plant placement decisions.
• View Past 9 Days Data. Press the button to scroll through today and up to 9 previous days of DLI records. Ideal for monitoring long-term light trends.
• Outdoor Weather-Resistant Design. Can be exposed to rain (not submersible). Operating temperature: 0–50°C. Designed for outdoor gardens and landscapes.
• Easy Time Setting & Battery Replaceable. Simple one-button setup for time adjustment. Powered by AAA battery. No complicated menus.