Remote LED sensor?

[cdevidal]

It's been 20 years since I'd done anything with electronics but it's like riding a bicycle

I just bought a cheap alarm system that has an LED showing when it's armed on the central unit, which is locked away in a cabinet. We need a remote display for the LED so that we can see the status from outside.

I'd prefer to modify an existing product to save time (doorbell, moisture sensor, etc.)

I think I'll need to clip the LED leads and solder a relay instead. When the relay is closed, send a signal via transmitter to the receiver outside, which has an LED or some other indicator.

The outside unit does not need to be weathertight.

Thoughts?

[cdevidal]

I may try simply extending the LED on a long pair of leads out to a window. Hope the resistance is low.

[abdiasis jama]

[quote="cdevidal"]It's been 20 years since I'd done anything with electronics but it's like riding a bicycle

I just bought a cheap alarm system that has an LED showing when it's armed on the central unit, which is locked away in a cabinet. We need a remote display for the LED so that we can see the status from outside.

I'd prefer to modify an existing product to save time (doorbell, moisture sensor, etc.)

I think I'll need to clip the LED leads and solder a relay instead. When the relay is closed, send a signal via transmitter to the receiver outside, which has an LED or some other indicator.

The outside unit does not need to be weathertight.

Thoughts?[/quote]

read this book microelectronic circuits by sedra smith it will give a handfull of transmitters and recievers