iDR-4. iDR-8. Paging across two units 23 July 2021 13:47 You will require: iDR Switch, PL device, iDR-Out, Pager Use 1 PL or iDR Switch to trigger pager on two iDR units Related articles iDR-OUT. Expanders AHM-64. Frequently Asked Questions AHM-64. Constant Level Paging iDR-4. iDR-8. Lost password