The GSM remote control with SMS operation features two inputs and two Simply-Max outputs, designed for reliable remote switching applications. This industrial-grade device operates at a nominal voltage of 230 V AC and offers two relay outputs with maximum load currents of 8 A per channel. The contact configuration includes two normally open (NO) contacts, providing flexible control options for various electrical systems. With SIM card functionality, the unit allows for SMS-based remote control operations, making it suitable for automation and remote management applications. The device is equipped with an SMA antenna connector and comes with a 20 mm x 100 mm GSM antenna and 2.5 meters of antenna cable for optimal signal reception. Screw terminal connections accommodate wires up to 4.0 mm² with a recommended tightening torque of 0.5 Nm. The power consumption is 1.3 W in standby mode and 3 W in active mode, ensuring energy-efficient performance. The operating temperature range extends from -10 °C to 50 °C, allowing reliable operation under various environmental conditions. The compact unit measures 3 modules (52.5 mm) and is designed for standard 35 mm DIN rail mounting. With an IP20 protection rating, it offers basic protection against solid objects and is suitable for indoor electrical installations. The black housing maintains a professional appearance compatible with industrial control cabinet environments. This remote control system provides practical solutions for building automation, industrial control, and remote management of devices through GSM network connectivity.