Absolute 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 Features

1,200+ foot range

12+ year battery life

80+ wireless sensors

Bank-level AES security

Up in 15 easy setup

Global ready (900, 920, 868 & 433 MHz)

LUX Sensor Specifications

Sensing Technology: High Sensitivity Photodiode

Sensor Material: Silicon

Peak Wavelength: 580 nm

Maximum Reverse Voltage: 6 V

Maximum Power Dissipation: 40 mW

Maximum Light Current: 500 uA

Maximum Dark Current: 0.3 uA

Maximum Rise Time: 8.5 ms

Maximum Fall Time: 8.5 ms

Maximum Operating Temperature Range: -30°C to +85°C

Measurement Range: 0 – 1,000 LUX

Variation Specifications

Security: Encrypt-RF® (256-bit key exchange and AES-128 CTR)

Accuracy: 0.5% of reading

Resolution: 0.01 LUX

Weight: 3.6 oz. (102 g)

ALTA AA Specifications

Battery Type: 2 Replaceable AA 1.5 V Batteries

Dimension: 4.375 in x 2.470 in x 1.12 in

Supply 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: ABS

ALTA 900 MHz Specifications

Operating Frequency: 900 MHz Operating Frequency

Certifications: 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)