Cytron Technical Forum

Hi,
i am developing a wireless alarm system.
and i am using the pt2272 as the decoder and using the RF module to receive the RF.
But i have the problem to connect the buzzer to the pt 2272.
anybody have any idea how should i connect it?
Thank you very much

I have do RF Module, but never use PT2272 yet.
See this RF Module example.

babemomo WROTE:Hi,
i am developing a wireless alarm system.
and i am using the pt2272 as the decoder and using the RF module to receive the RF.
But i have the problem to connect the buzzer to the pt 2272.
anybody have any idea how should i connect it?
Thank you very much

How is you 2272 connected on the Rx side? Under what situation you want the buzzer to sound? Do you want the buzzer to be triggered and latched or just triggered and sound momentarily?

Allen

ya the pt2272 is connected to the RX side. when it doesnt receive any signal so it will buzz...
when it receive the signal it will stop buzzing again..