YDS-R301 Addressable Photoelectric Smoke Detector (with EOL)


  • Equipped with three states LED status display 
  • Applies binary DIP switch allowing for easy setting of addresses 
  • Alarm indicator x2, without any blind angles.
  • Expandable conventional detector, no external power supply required
  • With independent monitoring indicator ,can clearly indicate detection status
  • Magnetic reed switch test function.
  • Passed CE standard.
  • Dual-wire multi-transmission technology
  • Provided with International Protection Marking IP44 (optional) 
  • Equipped with contacts for remote indicating lamp and relay function (optional) 



Model number



Product name

 Surface-mounted addressable fixed temperature heat detector

Number of sensitivity settings

One type

Two types


  • Photoelectric induction principle, highly stable while being fast and accurate and not subject to malfunctions resulting from chemical, gas leakage or external light sources.
  • Equipped with an insect-proof netting, with an aperture of 0.5mm, that allows smoke to flow smoothly while preventing insects and dust from entering.
  • This detector is not radioactive, is harmless to humans and animals.
  • Alarm indicator x2 (easy to identify the current status of the detector)
  • Independent green monitoring indicator (when the detector is functioning normally)
  • Optional function: Indicating lamp, relay contact, contact for the detectors.
  • Optional function: reed switch test function.

Working Environment

 0-50 Relative humidity of below 95%

 Communication line impedance 

 Internal impedance below 10Ω / trunk line


 Flame resistant plastic (UL94V-0 compliant)


 114.1ф x47.7(H)mm


 Includes R-type-designated E.O.L