LoRaWAN Smoke Detector


MSD4901 smoke detector is a smart product which realizes fire prevention and detects by monitoring the concentration of the smoke. The accurate and sensitive reaction makes it safe and reliable.




  • Optical smoke detector.
  • LoRaWAN compliant
  • Frequency:US915Mhz/AS923Mhz/EU868Mhz
  • Self- diagnostic sensor test.
  • Low power consumption.
  • Low battery warning signal.
  • Temperature compensation.
  • Analogue sensitivity value output.
  • Part function ( Test key、LED or Buzzer )can be used for RF by UART interface.
  • 4 PIN connector connecting for RF board.
  • Capable of connecting with wireless system control panel.

Hardware Specifications

Item Optical smoke detector
Dimensions 72 * 21 *262 (mm)
Sensitivity Smoke: EN14604、UL217
Sound Level 85dB/3M
Rating Voltage DC 3V,DC 2.6~2.7 Low voltage
Standby Current 25uA
Start Current 5mA
Alarm Current 120mA(max)
Operating Humidity 5%~90%
Operating Temperature -10℃~50℃
Dimensions 120 X 52.45 mm
Smoke Sensitivity range EN14604  0.105dB/m~0.165dB/m
Smoke Sensitivity range UL217   1.6%/ft~3.2%/ft