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Availability: In stock


Quick Overview

Monnit wireless light detection sensors can be used to detect whether light is present or not. The sensors can be user calibrated for baselines of light and dark, and will provide a status of light presence based on those baselines. Alerts can then be setup for when light has been detected or when there is no light detected.

Monnit Industrial Sensors come in an IP65, NEMA 4X, CE rated, sealed, and weatherproof enclosure. They are powered by a single, replaceable, Industrial grade 3.6 V battery (included).

An optional solar powered version is also available. The solar powered version includes a Lithium Iron Phosphate rechargeable battery in conjunction with a solar power cell to keep the battery charged and at optimal capacity. If there is no light present at the solar cell, the battery alone could continue to power the sensor for up to 5 years.

  • Sense the presence of light.
  • Know if the lights have been left on at your facility.
  • Know when light bulbs have blown and need to be replaced.

Phototransistor Specifications

Collector Emitter Breakdown Voltage (0.1 mA) 6 V
Collector Dark Current (5 VCE) 3 nA typ.
Collector Emitter Capacitance (Vce=0, f=1MHz, E=0) 16 pF
Collector Light Current (5 VCE, 20 lx) 5 to 24µA
Collector Light Current (5 VCE,100 lx) 75µA
Angle of Half Sensitivity ±50 degrees
Wavelength of Peak Sensitivity 570 nm
Range of Spectral Bandwidth 440 to 800 nm
Collector Emitter Saturation Voltage (20 lx, 1.2 µA) 0.1 V
Emitter Collector Voltage 1.5 V
Collector Current 20 mA
Power Dissipation 100 mW (Tamb=55°C)
Junction Temperature 100 °C

Industrial Specifications

Dimension 3.7 in x 2.32 in x 1.38 in
Max Operating Temperature -40° to 85°C (-40° to 185°F)
Device Range 300 – 350 ft. non-line-of-sight device range*
Supply Voltage 2.0 – 3.6 V
Battery Type Replaceable 3.6V, 1800mAH (single AA sized)
Optimal Battery Operating Temperature +10°C to +50°C (+50°F to +122°F)
Battery Life Up to 7 Year Battery Life.**
Solar Power Option 5 VDC Solar Panel
600 mAH Rechargeable Battery (>2000 Charge Cycles – 80% of Initial Capacity)
Charging Temperature Range: 0° to 45°C (32° to 113°F)
Max Temperature Range: -20° to 60°C (-4° to 140°F)
Enclosure Material IP65, NEMA 4X, CE rated, sealed, weatherproof enclosure
UL Rating UL Listed to UL508-4x specifications (File E194432)

900 MHz Specifications

Operating Frequency 900 MHz Operating Frequency
Certifications Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-RFSC1)
Complies with Industry Canada standards. (IC: 9794A-RFSC1)