I have done a few simple systems on new custom residential projects, but did quite a lot on Bank Branches.
The bank work ranged from system design per ADT specs (surveyed many, many, many sites with ADT Proj. Mgrs.), ending with cable and device installations. On banks prior to ADT's integration of a certain company, worked with vendors such as National Safe, Mosler and Diebold.
Typical project included "Hold-Up" indicators, ATM Packages, TCD Packages, Kiosk Packages, Alarm panel packages, motion detectors, keypads, hardwired pushbuttons, wireless holdup packages, CCTV cabling, WAN connections, Telco connections and head-end locations (using either Analog systems with VCRs and switchers, or DVR systems).
Quite a different type of work for sure!
Scott s.e.t.