Digital Telecom Largo Florida, distributor of industrial power Ups battery backup and surge protection equipment.

Surge Protection, Energy & Environmental Sensors, Battery Backups, Energy Analyzers, Sensaphone AutoDialers, Batteries for UPS and Battery Backup Systems, and more!

Your Source For Battery Backup Sales, Support and Service For Over 25 Years.

Specializing in transient voltage surge suppression, power quality, and engineering consultation for Naval shipboard, Air Station, Oil Production and Drilling, and general Industrial applications.

WR Block & Associates: Distributor for PolyPhaser, ICT, and ERICO; manufacturer of unique surge protection products. Amateur radio operator NR2B.

Surge Supply, Distribution Specialist in transient voltage surge suppressors, surge protectors and SPD Surge Protective Devices.

At Advanced Protection Technologies, Inc., we manufacture, market and service our products, Surge Protective Devices, to protect the electronic world.