Hardware trouble with NX-480 PIR sensor in a NX-8 system


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Old 09-18-18, 01:11 AM
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Hardware trouble with NX-480 PIR sensor in a NX-8 system

Hi there from Italy.
I have a serious trouble in a NX-480 sensor. It runned perfectly in past 2 years, then, after low battery signal we replaced two 1.5 AA battery. Two days and a new lowbat signal. I found a little oxidation in SMD circuit, clean oxide and the sensor seem runs but start to report false alarm response. This is the second sensor in 6 year (the other was more damaged by oxide).
Any people has same trouble? how can i solve it?
 

Last edited by pretoriano; 09-18-18 at 01:53 AM.
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Old 09-19-18, 03:12 AM
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Are you in a high humidity area? If so, you may need to use some dielectric grease on the battery terminals, and consider changing your batteries on a more frequent schedule.
 
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Old 09-19-18, 11:10 PM
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Thanks MrRonFL.
Humidity? Maybe, it's the washing machine room. Surely a wired sensor works in a dry condition. But the room doesn't seem so wet. A good idea dielectric grease solution.
 
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Old 09-20-18, 04:42 PM
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I'm from Florida. Moisture is something that you _always_ have to take into account. A laundry area is definitely a higher than average moisture area.
 
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Old 09-21-18, 12:52 PM
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Thanks MrRonFL, really!!!! First all I'm sorry about my poor english/american language.
I live under ALPS mountain, Piedmont. The house standing under a hill. Surely it has moisture trouble.
I worked several years on fire/burglar fields in the same conditions.
First time it happens. I think better solution is a wired sensor. The components can work always and dry humidity.

/home/oriano/Scaricati/Pan_vallemosso.jpg
 
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Old 09-21-18, 12:56 PM
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Old 09-23-18, 01:13 PM
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Wired devices are always my first choice. Wireless has improved, but still has minor issues, especially in marginal situations.
 
 

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