Can I connect a PIR(IR motion sensor) to the Cerbo GX via an input port?

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hmurmur asked Sep 5, '23

Can I connect a PIR(IR motion sensor) to the Cerbo GX via an input port?

I would like to add a motion sensor to the Cerbo GX

can I use the following device from amazon?

https://www.amazon.com/gp/product/B09KH1YWT1/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1

Can I connect to the Cerbo GX via one of the digital inputs on the "bottom" and configure for door alarm or similar?

alarm sensor

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Answer 1 · 2023-09-05T11:36:56Z

pwfarnell answered · Sep 05, 2023 at 11:36 AM

Yes, but the Cerbo digital inputs work best with just an on off switch, the voltage they can accept is quite low. Therefore, wire the output from your PIR to the coil side of a 12V or 24V relay depending on your operating voltage. Then connect the output contacts of the relay to the cerbo digital input.

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Answer 2 · 2023-09-22T02:43:15Z

elvis answered · Sep 22, 2023 at 02:43 AM

A normal PIR (Not the one you linked) has an alarm output that is a dry contact relay that is simply "Open or Closed"

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Answer 3 · 2024-02-23T06:56:25Z

paros answered · Feb 23 at 06:56 AM

Please advise, which low power consumption motion sensor (battery operated?) will work with Cerbo GX (if possible through Bluetooth or in other case with cable connected).

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Answer 4 · 2024-02-23T07:12:23Z

paros answered · Feb 23 at 07:12 AM

Does the digital input on the Cerbo GX require voltage or does it want open/closed circuit (like taking each end of a cable to each connection on the digital input of the Cerbo GX)?

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pwfarnell commented · Feb 23 at 05:39 PM

The digital input can take a voltage but this is limited to 3.3V I believe, it will be specified in the documentation somewhere. However, it will also work without a voltage just wiring a switch between the two terminals of the digital input will activate it.

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