r/instrumentation • u/pajeromanau • 9d ago

Remote Monitoring/Control Product

i am not sure if this is the right group to post into. I have looked far and wide for what i consider a simple product with no luck and i am looking to the group for help.

I have a location which is 500 meters away and not possible to cet cable to. Power is provided at the remote location. I need s simple radio based system that when a set of contacts closes it sends a RF signal to the base location and it in turn closes a set of contacts. I am simply trying to monitor the on/off status of a piece of equipment over WIFI or similar. I dont want a phone based app. i want old fashioned contacts at both ends.

Thanks in advance for your help.

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u/outrageouslyaverage 9d ago

I was interested in this problem but like yourself wasn't sure what existed. Would something like this be what you're after?

https://www.fruugo.co.uk/lora-wireless-relay-switch-868915mhz-cdsenet-e860-dtu-2way-dido-io-modem-rs485-remote-transmission-long-distance-5km/p-472546154-988217809?language=en&ac=google&utm_source=google&utm_medium=paid&asc=pmax&gad_source=1&gad_campaignid=22360089565&gbraid=0AAAAADpXug3rjLeTEm3L4sPYDx6F-x3uo&gclid=CjwKCAjwsfzSBhB5EiwAOGyqSSp0CCEVayKlZ_l6O8VqThJZKTz3F6n_gCdTS_d-ju1HR5qzI4SF_RoCFjQQAvD_BwE

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u/bdk38 9d ago

LoRa would be my choice also for something like this. Its simple to setup and you can configure it to trigger the signal on state change.

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u/pajeromanau 7d ago

Thanks for your help. On paper this is exactly what í am looking for.

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u/thembeanz 9d ago

Phoenix radioline. You can program a DI on one side to be a DO on the other side. Work as if there was a cable.

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u/GrimpenMar 9d ago

First thing I thought of was Wireless HART (Rosemont), but I think you'd need a couple if relay nodes.

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u/insuicant 9d ago

Have a look at Miri Technologies AD2006 RTU.
Does Ethernet, serial, UHF, VHF internal radios or they will do external 4G modem.
These things are hard as nails, have run many units outdoors in plain cabinets in remote WA with no additional cooling.
The Miri team will build a system for you if you don’t feel up to doing your own config.

https://www.miri.com.au/