DFRobot SEN0644 RS485 Waterproof Ambient Light Sensor

DFRobot SEN0644 RS485 Waterproof Ambient Light Sensor is a completely waterproof digital ambient light sensor that measures the intensity of light in different environments with a detection range of 0Lux to 200KLux. The DFRobot SEN0644 uses the standard Modbus-RTU 485 communication protocol and a wide 5VDC to 32VDC voltage power supply.

The sensor can be used with the TTL-to-RS485 expansion board (DFR0259) or the Gravity: Active Isolated RS485-to-UART Signal Adapter Module (DFR0845) to read the light value on the Arduino UNO R3 or to quickly build a test environment. SEN0644  features a simple wiring method and is easy to use.

With an IP68 waterproof rating, the ambient light sensor can be completely immersed in water without damage. The DFRobot SEN0644 RS485 Waterproof Ambient Light Sensor is suitable for various indoor and outdoor harsh environments, such as weather stations, vegetable greenhouses, outdoor lighting, flower cultivation, factory workshop lighting, and automotive smart lights.

Features

  • Brightness data
    • 0.001lx to 0.02lx at night
    • 0.02lx to 0.3lx on moonlit nights
    • 5lx to 50lx for indoors, cloudy skies outdoors
    • 50lx to 500lx for cloudy outdoors
    • 100lx to 1000lx for indoor, sunny skies outdoors
    • About 10*6lx for summer noon light
    • 50lx to 60lx for illumination when reading
    • 1400lx for standard illumination for home videos
  • Waterproof grade IP68
  • Wide 5VDC to 32VDC power supply range
  • Wide 0lux to 200KLux measurement range
  • RS485 interface, standard Modbus-RTU protocol

Applications

  • Weather stations
  • Vegetable greenhouses
  • Outdoor lighting
  • Flower cultivation
  • Factory workshop lighting
  • Automotive smart lights

Specifications

  • 5VDC to 32VDC power supply voltage range
  • <10mA working current
  • RS485 output mode
  • 0lux to 200KLux measurement range
  • 0.01Lux resolution
  • ±5% accuracy
  • -40°C to +80°C operating temperature range
  • IP68 protection
  • 10mm thread length
  • 25mm opening size
  • 33mm wrench size
  • ø4mm to ø10mm cable diameter range
  • 1m line length

Overview

Mechanical Drawing - DFRobot SEN0644 RS485 Waterproof Ambient Light Sensor

Connection Diagram

Mechanical Drawing - DFRobot SEN0644 RS485 Waterproof Ambient Light Sensor

Dimensions

Mechanical Drawing - DFRobot SEN0644 RS485 Waterproof Ambient Light Sensor
Publicēts: 2026-01-22 | Atjaunināts: 2026-01-30