IC Realtime MNT POLEXT 30 Extension Pole For MNT CEILING 30 Strattec Input Voltage: Regulated DC12V~24V ± Input Voltage: Regulated DC12V~24V ± 5% Adaptor Input Current: DC12V Input : Max 300 mA ± 10% Technology: Optical Image Resolution: 500 DPI Scan Area: 15 x 18 mm Liveness Detection: Yes – Detects and rejects fake fingerprints (silicon This key is for Comfort Access Prox Models and this will also work on Non Prox models No problem multiple MNT POLEEXT 30 extension poles can be stacked to achieve additional drop length to reach your planned elevation above the target camera coverage area but its 30" drop length may not be enough for modern high ceiling or exposed beam roof structures such as those in big box retail