Centralised Control for Multi-Heater Systems

Ideal for commercial and industrial environments, the eSR-18 supports systems where multiple heaters are controlled from a single point. It integrates cleanly with simple manual switches or external control systems, giving specifiers and installers flexibility in system design.

Durable, Installer-Friendly Design

Housed in a tough enclosure for long service life, the relay box is engineered for quick, professional installation and dependable day-to-day operation as part of any eSchwank heating scheme.