About us

Our Company

At Harmer & Simmons, we’ve been securing the power behind telecommunications since 1993. Our core mission is to ensure reliable backup power for critical telecom infrastructure, like antennas and transmission systems—not to provide the antennas themselves. Specializing in high-quality telecom modules, we focus on relay and switching technologies that guarantee uninterrupted power flow, which is essential for stable and resilient telecom networks.
Our product line includes high-performance modules / power shelves designed for high frequency switching and signal integrity, making them indispensable for dependable telecom and data transmission. With a commitment to strict industry standards and reliability, Harmer & Simmons has earned the trust of clients who depend on robust, uninterrupted communication solutions