RCWL-0516 Microwave Radar Motion Detector (HCSENS0040)
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Author:  admin [ Fri Apr 21, 2017 12:01 pm ]
Post subject:  RCWL-0516 Microwave Radar Motion Detector (HCSENS0040)


This module has been designed as an alternative to the PIR motion detectors commonly used in burglar alarms. Instead of sensing changes in infrared radio emitted by a moving person this sensor uses a microwave Doppler radar to detect moving objects. It has a sensitivity range of ~7 meters. When triggered its trigger output pin will switch from (LOW) 0V to high (3.3V) for ~ 2 to 3 seconds before returning to its idle LOW state.



Product code: HCSENS0040
Supply Voltage: 5V dc
Supply Current: >3mA (2.8mA typical)
Operating frequency: ~3.2GHz
Transmit power: 20mW (typical) / 30mW (max)
Size: 36mm x 17mm


Component side should face detection area for maximum sensitivity
Do not place metal objects within 1cm of antenna
Trigger out - HIGH (3.3V) motion / LOW no motion
3.3V output is for reference only - do not use to power other devices.
Device operates at ~3.2GHz/20 - 30mW. In some countries it may be illegal to operate this device.


3V3..........Regulated output (reference only)
GND.........Ground / 0V supply input
OUT..........Trigger: HIGH (3.3V) motion detected / LOW (0V) idle
VIN.......... 5V-12V supply input
CDS..........Sensor disable input (pull low to disable)



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Author:  formosafox [ Tue May 30, 2017 2:22 am ]
Post subject:  Re: RCWL-0516 Microwave Radar Motion Detector (HCSENS0040)


need Fritzing parts file
thanks !

Author:  andrew [ Wed May 31, 2017 9:08 am ]
Post subject:  Re: RCWL-0516 Microwave Radar Motion Detector (HCSENS0040)

I don't know if there is a Fritzing part in existence for this module but I'm afraid we don't possess one. Although the image looks a little like a Fritzing part is actually just one of our own drawings.

Author:  barewires [ Sun Jul 09, 2017 5:35 am ]
Post subject:  Re: RCWL-0516 Microwave Radar Motion Detector (HCSENS0040)

Hooked up the cat detector to a PiZeroW running Node-RED and it emails me when my neighbours cat is sneaking in my window. A short message is also sent by Twitter.

C: I bleeding got one, look! What's that then?
S: This is a dog license with the word 'dog' crossed out and 'cat' written
in in crayon.
C: The man didn't have the right form.
S: What man?
C: The man from the cat detector van.
S: The looney detector van, you mean.
C: Look, it's people like you what cause unrest.
S: What cat detector van?
C: The cat detector van from the Ministry of Housinge.
S: Housinge?
C: It was spelt like that on the van (I'm very observant!). I never seen so
many bleeding aerials. The man said that their equipment could pinpoint
a purr at four hundred yards! And Eric, being such a happy cat, was a
piece of cake.

Author:  barewires [ Sun Jul 23, 2017 2:27 pm ]
Post subject:  Re: RCWL-0516 Microwave Radar Motion Detector (HCSENS0040)

CAT5 should now be renamed USB5. Verified the cat detector by illuminating the beast with a 3.3 volt 10mm Blue LED from a 3.3 volt out hence not needing a dropping resistor. The device LED was then taped into my peephole (on my front door) and detects all motion, me, neighbours in their flats, anybody through the door.

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