Replacing system smoke detectors.


Old 10-03-15, 01:49 PM
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Join Date: Oct 2015
Location: USA
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Replacing system smoke detectors.

My current alarm system is a Ademco Vista-20P. There are 6 - GE/ESL 449CST & 1- GE/ESL 449CSTE (located at the end) smokes. I need to replace the GE/ESL 449CSTE since it has failed and I want to replace it with a different model. I have researched and found the following two replacements:

1. System Sensor 4WTA-B & EOL Relay A77-716B

Is it ok to have two different brands of detectors in the same loop? Does anyone have a recommendation of another brand and model of smokes that would be better than I have found?

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Old 10-04-15, 04:09 AM
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Since 4-wire smokes are just contact closure devices, mixing brand/model on the same loop is perfectly fine. You can even mix in heat detectors, in such a circuit.

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