Weidmuller Termseries (TOS) Solid State Relays offer wear-free potential isolation in a terminal block format. These relays are essential for potential isolation and signal adjustment to perform their tasks reliably and permanently. Instead of wear-prone electromechanical solutions, maintenance-free solid-state relays with integrated potential isolation are increasingly being used. TERMOPTO solid-state relays in terminal block format are the perfect solution for the simple and reliable decoupling of digital signals. Besides their particularly compact design, they are distinguished by their PUSH IN connection system, plug-in cross-connections, and an optimal price/performance ratio.