Looking for the best solution about pre-certified RF modules

[josmA]

Hi,

I need to communicate 2 devices wirelessly, 1 or 1.5 meters away from each other. I just need to send a command, it means, I send HIGH value to receive HIGH value in the receiver, actually the transmitter side is a button.

The constraint is to use a pre-certified module to avoid a future process certifying it plus the money to get it certified.

Could you suggest the best RF module solution in terms of cost, consumption and simplicity?
Thanks in advance

[brabus]

Hi,

(…)

The constraint is to use a pre-certified module to avoid a future process certifying it plus the money to get it certified.

(…)

The pre-certification of the module does not imply that the final product is certified as well. You will need to run the certification process anyway.
The big advantage of using a module is that you can avoid some specific Tests (e.g.: RE-D), which are expensive and time consuming on a custom module.

Anyway, for such a short distance and information content, I would look at some intelligent alternatives such as ultrasound or IR. In that case you can dramatically simplify your certification process (hey, no radio!).

If you absolutely must use a Radio, then go for Zigbee or BLE.

[josmA]

I understand that ultrasound or IR needs to have direct sight of each other, so it wouldn't be possible.
I am looking for a simple certified 433mhz transmitter and receiver but they are very expensive, maybe BLE is the best solution, but complex for just a button...

Thank you for your reply!

[brabus]

You are welcome!

I would take a look at the home lighting solutions from Philips: they are in fact based on Zigbee, with button interface which are even 100% passive (e.g.: piezoelectric switches).
Otherwise, do you know the protocol EnOcean? May be worth a look.

You could even buy the button without developing it at all, so it is already certified, and you only have to work on the receiver side.

BLE is a piece of cake, you need one chip at all and a bit of SW...

[josmA]

Can you specify or send a link to this Philips solution? About the EnOcean, I never heard about it, I will have a look. thanks

[brabus]

https://www2.meethue.com/en-gb