Check the listing for details. HeartSine Samaritan Gateway Including Carrying Case. Condition: New – Open box. Listed at 250.00 USD. The HeartSine Gateway allows you to track weekly self-test, battery levels and expiration dates of your Heartsine Samaritan AED. Easily install by plugging the Gateway into your Samaritan AED and connecting via Wi-Fi. (Item does not come with an AED.)Readiness Made Easy: The Gateway takes simple, off-the-shelf batteries and will send a notification email when battery level is low.Compatible with:Heartsine Samaritan 350PHeartsine Samaritan 360PHeartsine Samaritan 450PPackage IncludesRemoval Tool - Allows you to easily remove the Gateway from your HeartSine AED if needed.Larger Case - Case accommodates slightly larger size of the AED with the Gateway attached.Batteries - Brand new CR123A lithium batteries (4) Retails for $336.00.Works with models 2013 and newer. Serial number starts with "13" or larger. Add-on unit only, AED is sold seperately.