GS-WDS07 433Mhz Door sensor with open/close status

rf
#1

Here is some infos about an OMG compatible Door sensor mainly interesting by the fact it send a signal for open status and a different signal for close status of the door.


Affiliated link

Power consumption
When sending signal (open or close) 30mA during around 1s
Sleep current 27uA continuously

Duration estimation
AAA battery capacity is 1000mAh
4 sending per day -> 4* 30/3600 = 0,033mAh per day for sending
Sleep current per day ->0.027mA * 24 =0,648mAh per day for sleep
Total per day: 0,681mAh
1000/0,681=1468 days -> around 4 years

Close signal:
home/OpenMQTTGateway/SRFBtoMQTT/raw 36EC01CC05502D0F0E
home/OpenMQTTGateway/SRFBtoMQTT/value 2952974
home/OpenMQTTGateway/SRFBtoMQTT/delay 1406
home/OpenMQTTGateway/SRFBtoMQTT/val_Thigh 460
home/OpenMQTTGateway/SRFBtoMQTT/val_Tlow 1360

Open signal:
home/OpenMQTTGateway/SRFBtoMQTT/raw 371E01D605502D0F0A
home/OpenMQTTGateway/SRFBtoMQTT/value 2952970
home/OpenMQTTGateway/SRFBtoMQTT/delay 1411
home/OpenMQTTGateway/SRFBtoMQTT/val_Thigh 470
home/OpenMQTTGateway/SRFBtoMQTT/val_Tlow 1360

Some pictures:
Power consumption when no action

Reception package

Package content

Disassembled

Disassembled 2

#2

Hi, few days ago I get the same but with option that send status also when you try to remove it. I think that aslo send status when battery is low, we will see. I have problem with range when it is connected to metal door (max 3m range).

#3

Hi,

Yes I think also that it would send status when battery low.
Did you get exactly the same codes or are they differents?

#4

€ 5,83 6%OFF | YobangSecurity 433MHz Wireless Magnetic Door Sensor Detector Door Contact Detect Door Close Open for G90B WIFI GSM Alarm System

*6 is open, *10 closed…

#5

The first one looks great and the price is excellent, especially with the use of a common AAA battery.
I don’t see a temper sensor on it, but for me at least its not needed.

What kind of range did you get indoors?

I’ve ordered this one for leakage detection to place near my washing machine and refrigerator since its the only one i’ve found which (supposedly) sends a low voltage alert:

Now i’m looking for a low power stand-alone learning RF receiver which will trigger a wireless motor+battery device that will unlock all the internal doors in the house when someone is home.

#6

I’m using these as well. Good price and cheap to replace batteries, though I occasionally get a door or window that remains ‘open’ even though it is closed.

Can confirm they do have a low battery and tamper signal as a separate code. Mine do not have a tamper switch, same as the photos above, but there is a spot there on the PCB for one next to the reed switch (4 pcb holes marked S2), so if you can find an appropriate switch, a tamper option can be added. The tamper code is sent when the circuit is broken.

If the close code is for example 1000010 then the other codes will be:

battery 1000002
tamper 1000003
open 1000006
close 1000010

1 Like
#7

Sorry, I’m new and this is probably a daft question. I got one of these senors recently and sucessfully got it working with the gateway, but I notice my codes are different:

Closed 3225102
Open 3225098

From the above I’m guessing the low battery code will be 3225094?

Do all sensors of this model have unique codes like this? I’m hoping this is the case so I can use multiple sensors and determine which window/door is open.

#8

Yes I think so, they all have different code in the limit of being unfortunate, but there is a quite huge range of values possible.

#9

I have about 15 of these sensors and you are indeed correct, the codes do not always end in 06 and 10 for open and close. They are always 4 apart though. And I am guessing that your assumption on the low battery code is correct, but I have yet to test it…

#10

Thanks both. I’ve got a second sensor up and running nicely :slight_smile:

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