August 2, 201015 yr have you any in stock that are compatible with the scantronic 500r - 2 pirs, 1 remote setting device, 1 door contact, 1 wired bell/siren external
August 2, 201015 yr Wireless wise you will have to order 500r parts of the correct freq to match your panel. So yes. bellbox wise the 500r will accept any hard wired bell. So to suit your bdget etc. Support
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