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Milesight EM500-LGT Light Sensor

The Milesight EM500-LGT is an outdoor environment monitoring sensor designed for measuring light in harsh environments. It features a long-lasting battery life of up to 10 years, an IP67 UV-resistant and waterproof enclosure, and can be easily configured via NFC. The EM500-LGT is widely used for outdoor applications like smart agriculture, urban lighting, smart buildings, greenhouse control, and weather monitoring.

Features

  • Wide Measuring Range: 0 - 100,000 lux with high precision (±3% accuracy)
  • Long Range Communication: Ultra-wide-distance transmission up to line of sight of 10 km
  • Extended Battery Life: Built-in 19,000 mAh replaceable battery with up to 10 years operation
  • Rugged Design: IP67 waterproof transceiver and IP65 light sensor for harsh environments
  • Easy Configuration: NFC and USB Type-C for quick setup via mobile app or PC software
  • Data Management: Local storage of up to 1,000 historical records with retransmission support
  • LoRaWAN Compliance: Standard LoRaWAN protocol (Class A, OTAA/ABP modes)
  • Advanced Features: Data retrievability, threshold alarms, and data retransmission

Technical Specifications

LoRaWAN Communication

  • Technology: LoRaWAN®
  • Frequency Bands: CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923
  • Transmission Power: 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz)
  • Sensitivity: -137 dBm @ 300 bps
  • Activation Mode: OTAA/ABP
  • Class: A
  • Antenna: Internal

Light Sensor

  • Measurement Range: 0 - 100,000 lux
  • Accuracy: ±3%
  • Resolution: 1 lux

Power

  • Battery: 1 × 19,000 mAh ER34615 Li-SOCl₂ Battery (replaceable)
  • Battery Life: Up to 10 years (at 10-minute reporting interval, 25°C)

Physical Characteristics

  • Dimensions: 69.5 × 71 × 105.4 mm
  • Weight: 333 g (with battery and mounting bracket)
  • Cable Length: 3 m
  • Operating Temperature:
  • Transceiver: -30°C to +70°C
  • Light Sensor: -30°C to +60°C
  • Relative Humidity: 0% to 100% (non-condensing)
  • Ingress Protection:
  • Transceiver: IP67
  • Light Sensor: IP65
  • Housing Material:
  • Transceiver: ABS + PC, Grey
  • Light Sensor: Aluminum alloy, White

Interface

  • LED: 1 × LED indicator (internal)
  • Button: 1 × Power/Reset button (internal)
  • USB: 1 × USB Type-C (internal) for configuration and console
  • Configuration Methods: Mobile app (via NFC), PC software (via USB Type-C), Downlink

Use Cases

  • Smart Buildings: Indoor and outdoor lighting monitoring
  • Urban Lighting: Street light optimization and energy management
  • Greenhouse Control: Light level monitoring for optimal plant growth
  • Smart Agriculture: Crop monitoring and environmental control
  • Weather Monitoring: Ambient light tracking for meteorological applications

Thinger.io Integration

The Milesight EM500-LGT can be seamlessly integrated into Thinger.io through LoRaWAN network servers, enabling real-time monitoring, data visualization, and advanced analytics for light measurement applications.

Requirements

A LoRaWAN server is required to communicate the Milesight EM500-LGT into Thinger.io, some options are:

Alongside, the corresponding plugin for the selected LoRaWAN server needs to be installed in your Thinger.io instance.

Get Started

Installation

Look for the plugin in the Thinger.io Plugin Store and install it in your Thinger.io instance. Once the plugin is installed a new Product will be created for this device.

Configuration

The Product is already preconfigured, check that the auto provision prefix matches the one selected in your LoRaWAN server plugin in Thinger.io, or change it to your desire.

Usage

Start sending uplinks for autoprovisioning devices and buckets. This product also provides a predefined dashboard and downlinks.

Additional Resources

Milesight resources can be found at: