With the paging system about to cease, we are having to move our paging based alarm system (EDAC700) to a 3g/4g based sms notification system.

We have been told that modification of the system is not possible due to age so we need to purchase a new system that uses a SIM card to send text notifications.

Out our way Spark is 1-2 bars at best with lots of dead spots in various locations (inside farm sheds) - Vodafone is worse.

As well as a new alarm panel, we also need to improve the cell signal so that we can reliably receive text notifications.

What are peoples experience with boosters (voice and data) - within a house (2 or 3 houses)  or from a central location covering multiple areas in different sheds/houses.

Would you purchase via eBay or stick with NZ based supplier e.g.. How reliable are they

TIA