Temperature Sensor

Hi. I'm creating a temperature sensor using Arduino. I need it to be able to send wirelessly when temperature is sense at the transmitter side and the receiver will be able to receive it with the Buzzer alarm, LED light up and LCD display and a Message to be received. But I'm not sure how to do it. Is there anyone that can help me? Thanks.

Also,
Please don’t post the same thing in muliple places (a.k.a cross posting).
Thanks
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