Wireless sensors for monitoring - which system to choose?

[Pistom]

I'm looking for a system to monitor various aspects of a materials storage facility to cover various aspects such as temperature, if someone enters an area and if certain containers are moved. I need it to log temperature over time and for it to send me notifications if anything changes such as temperature getting out of range.

These people seem to do everything I need https://wireless-sensors.co.uk/ but they seem really expensive.

Can anyone suggest alternatives please?

[eeLee]

https://tutorials-raspberrypi.com/raspberry-pi-sen...

Pi and GPIO = maybe what you need?

[Pistom]

Thank you. That looks interesting. At this moment that solution looks a little too techy for me but I'm interested to learn more.

[egomeister]

Functionally you could probably do it all with smart home stuff, but I'm not sure if that would be resilient enough for a commerical purpose.

Also bear in mind if you want temperature control you'd likely want to verify that they are actually accurate - would calibration be necessary etc?

[Pistom]

Thank you. I will take a look at that.

[mikef]

For just temperature and humidity monitoring and alerting, you could look at SensorPush, not too expensive. I have 8 sensors connected to two WiFi gateways, mainly waterproof sensors

[Griffith4ever]

Pistom said:

I'm looking for a system to monitor various aspects of a materials storage facility to cover various aspects such as temperature, if someone enters an area and if certain containers are moved. I need it to log temperature over time and for it to send me notifications if anything changes such as temperature getting out of range.

These people seem to do everything I need https://wireless-sensors.co.uk/ but they seem really expensive.

Can anyone suggest alternatives please?

Home assistant and zwave /ZigBee sensors will do all this for you, cheaply. However, you need to be a tech head to get it all up and running.

My home assistant setup will log all of what you ask, and show me graphs of temps, give pre defined alerts etc.

The solution you linked is expensive because they have , one assumes, done the tech part for you.

[ARHarh]

Griffith4ever said:

Pistom said:

I'm looking for a system to monitor various aspects of a materials storage facility to cover various aspects such as temperature, if someone enters an area and if certain containers are moved. I need it to log temperature over time and for it to send me notifications if anything changes such as temperature getting out of range.

These people seem to do everything I need https://wireless-sensors.co.uk/ but they seem really expensive.

Can anyone suggest alternatives please?

Home assistant and zwave /ZigBee sensors will do all this for you, cheaply. However, you need to be a tech head to get it all up and running.

My home assistant setup will log all of what you ask, and show me graphs of temps, give pre defined alerts etc.

The solution you linked is expensive because they have , one assumes, done the tech part for you.

If it was me I would do it with Home Assistant as it will do everything you want, (and probably a lot you never knew you wanted )

You could get on the home assistant forum and ask if someone would do the setup for you. Problem is maintaining it but then I guess that would be the same whatever you use.

If you are near me I would set it up for you for a small fee.

[arcturus]

We use the Ubibot range to monitor temperatures in freezers and chillers in our warehouse and our IT equipment rooms.

WS1-Pro with the PT100 Industrial probe for the freezers and the simpler WS1 for the chillers and warehouses themselves.

They all connect to the cloud via wifi and you can see the data either in an app on your phone or login to the portal from a normal PC. You can set all sorts of alerts - for example we have alerts set to notify us if freezer temps rise above -40C. On the free package, cloud data is retained for 2 years up to a limit of 200MB per device. We have over 30 devices and have never got anywhere near the limit on any of them. You can download the data in various formats if needed.

In terms of battery life, we have to replace the 4 x AA in the WS1Pro about 3 times a year and the 2 x AA in the WS1 about every 7 months. You can power then from a USB adapter but that is not practical in our locations.

I know the units are not cheap but it has actually saved our company money as we no longer have to pay a member of staff to go in twice a day on weekends and public holidays to check the freezers.

[Baldchap]

A Unifi Protect Sensor will do all of tour requirements in one device as long as there's an access point close by, however, if you aren't already on their infrastructure it would likely be cost prohibitive.