Bluetooth is great technology — but not necessarily for electronic remote trap monitoring. If sensors use Bluetooth to communicate directly to an app, you need to walk by each trap to check trap status, reducing greatly the time savings Trapmate could provide.
And if an ERM hub/gateway uses Bluetooth to connect with sensors, the distance you can place your sensors from the hub is sharply limited — tens of feet vs. the hundred or thousands of feet that Trapmate’s RF connectivity can provide. For large sites, this means you’d have to purchase a lot of expensive hubs — with Trapmate, you probably only need one or two.