ALTA Wireless Light Meter - AA Battery Powered, 900MHZ

ALTA wireless light meters measure the intensity of light in lux (luminescence/unit area), from 0 – 83,000 lux (indoor range). Perfect for light sensitive applications like museum and art gallery light monitoring. User customization allows you to set the frequency of readings and the ability to set thresholds for notifications and alerts by SMS text, email or voice call from the system. Monnit MNS2-9-W2-LS-LM Features1,200+ foot range12+ year battery life80+ wireless sensorsBank-level AES securityUp in 15 easy setupGlobal ready (900, 920, 868 & 433 MHz) LUX Sensor SpecificationsSensing Technology: High Sensitivity PhotodiodeSensor Material: SiliconPeak Wavelength: 580 nmMaximum Reverse Voltage: 6 VMaximum Power Dissipation: 40 mWMaximum Light Current: 500 uAMaximum Dark Current: 0.3 uAMaximum Rise Time: 8.5 msMaximum Fall Time: 8.5 msMaximum Operating Temperature Range: -30°C to +85°CMeasurement Range: 0 - 1,000 LUXVariation SpecificationsSecurity: Encrypt-RF® (256-bit key exchange and AES-128 CTR)Accuracy: 0.5% of readingResolution: 0.01 LUXWeight: 3.6 oz. (102 g)ALTA AA SpecificationsBattery Type: 2 Replaceable AA 1.5 V BatteriesDimension: 4.375 in x 2.470 in x 1.12 inSupply Voltage: 2.0 - 3.8 V (2 x AA 1.5V Batteries or Optional Power Supply)Battery Life: At 1 hour heartbeat setting, AA batteries will last up to 10 years.**Max Operating Temperature Using AA Alkaline: -18°C to 55°C (0°F to 130°F)Max Operating Temperature Using AA Lithium: -40°C to 60°C (-40°F to 140°F)Optimal Battery Operating Temperature: +10°C to +50°C (+50°F to +122°F)Enclosure Material: ABSALTA 900 MHz SpecificationsOperating Frequency: 900 MHz Operating FrequencyCertifications: Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-G2SC1)Complies with Industry Canada standards. (IC: 9794A-G2SC1)Device Range: Device Range Up to 1,200 ft. non-line-of-sight, wireless device range*Security: Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)