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Posted

We have a Scantronic 9752 system with 2 9955 rfx expanders. The zone in the garage has a dual tech pir and transmitted using a 735r.

About every two days we get a Sup Fail message on this zone. Distance is about 45 yards - easy line of sight and only a thin slate roof for the signal to get through.

Suspecting the transmitter was not strong enough we recently bought from you the 703r transmitter and unfortunately still have the same problem. We tried the zone on both 9955 receivers which both show a signal stength of 6. So we have effectively changed the transmitter and the receiver and appear to have a good signal but are still getting Sup fail messages.

Any idea what we could try next.

Incidentally we have a Range Rover whose alarm system is upset by the burglar alarm. Any chance of it working in reverse and the Range Rover upsetting the signal from the 735r

Any suggestions welcome

Posted

Its possible but lets look at a few other things first.

A sup fail means the weaker heartbeat signal is sometimes not getting through.

When you test it does it work ok?

Do you get sup fails at all times. ie day/night, range rover not there etc etc.

 

Also what have you got the sup fail time programmed as?

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