NJR4265 series (24GHz Motion Detector / Doppler Module, Digital Output / Standard type)

24GHz Motion Detector Modules –Digital Output Type–

NJR4265 series

Motion detector using the 24GHz Microwave Doppler
Antenna, RF circuit, IF amp, MCU and voltage regulator are integrated in a small package
Low voltage operation and low power consumption
Signal processing software for the steady sensing
• Enhancing the signal from movement object and decreasing random noises
• Decreasing the mutual interference between sensors
• Identification of direction for movement object (approaching and leaving)
Communication with PC/MCU is available by UART interface and stand-alone operation is also possible

Products Line-up

Part No. RF Frequency Region
/ Regulation
NJR4265RJ1C1 24.05 to 24.25 GHz Japan
/ Technical Conformity [Certified]
NJR4265RF1C1 Europe except specific regions
/ CE - RE Directive [Compliance]
NJR4265RF2C1 24.15 to 24.25 GHz Europe
/ CE - RE Directive [Compliance]
NJR4265RF3C1 24.075 to 24.175 GHz U.S.A.
/ FCC Certification [Certified]


Items Parameters
RF Frequency 24.05 to 24.25 GHz
Output Transmission Power
+20 mW max.
Maximum Detection Distance 10 m
Antenna Angle 70 ° / 90 ° (depends on installation direction)
Detectable Speed Range 0.25 to 1.0 m/s [Reference]
Detection output method UART
COMS Level High/Low
Power Supply Input Voltage: 3.0 to 5.25 V
Current: 60 mA
Operating Temperature Range -20 to +60 ℃
(w/o Interfaces & Screws)
(L) 20.4 x (W) 14 x (H) 8.8 mm
Weight 5 g max.
Outline Drawing

Evaluation Kit

Part No. for Evaluation Kit: NJR4265J1K
Contents List • Module
• Evaluation Board
• USB Cable
• GUI *Download from below