Installation/maintenance all types telephone equipment, building wiring, DC power/rectifiers, inverters, power boards, batteries/flooded & vrla, intrusion and fire alarm systems, surveilance cameras and recorders, all types communications equip.

Power and Communication Line and Related Structures Construction, Site Preparation Contractors, Computer and Computer Peripheral Equipment and Software Merchant Wholesalers, Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers, Other Electronic Parts and Equipment Merchant Wholesalers

Radio, Television, and Other Electronics Stores, Paging

All Other Specialty Trade Contractors, Paging, Telecommunications Resellers

Paging

Paging, Telecommunications Resellers