Check the listing for details. MASTECH MS6612 Digital Luxmeter Illuminometer Light Meter Foot Candle Auto Range. Condition: New – Open box. Listed at 39.99 USD. MASTECH MS6612 Digital Luxmeter Illuminometer Light Meter Foot Candle Auto Range BRAND NEW NEVER BEEN USED OUT OF BOX ITEM. SEE PICTURES TO INSPECT QUALITY AND SEE WHAT YOU'RE GETTING. PLEASE FEEL FREE TO ASK ANY QUESTIONS YOU MAY HAVE ABOUT THE UNIT BEFORE PURCHASING IT. THANKS FOR YOUR INTEREST IN THIS LISTING. WE APPRECIATE YOUR BUSINESS. This is a MASTECH MS6612 Digital Luxmeter Illuminometer Light Meter Foot Candle Auto Range. It has a range up to 50000 Lux and a measurement range of 0~200000. The accuracy is ±(3%+2) and the battery life is approximately 150 hours of continuous use. The sensor type is a Silicon Photodiode connected to the meter, and the sensor stability is ±2% change per year (in first two years). The environment it operates in is 0 to 50°C / 32 to 122°F; max RH 95%. This item is listed under the categories of Business & Industrial, Test, Measurement & Inspection, Test Meters & Detectors, and Light & Lux Meters.