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S55770-T158 SIEMENS RDG100 - Room thermostat
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The S55770-T158 (RDG100) is a wall-mounted, LCD-equipped room thermostat from Siemens' RDG1.. family. It provides temperature control (2-point, 3-point or PWM) and fan-speed control for fan-coil units and universal applications in HVAC systems. It supports automatic or manual heating/cooling switching, multifunctional inputs for sensors (e.g. external room or return-air sensors), keycard or window contacts, and outputs for valves, fan speeds, electrical heaters or radiator control. Typical uses include controlling fan-coil units in commercial or institutional buildings.
Best Suited For
- Fan-coil unit HVAC control
- Automatic/manual heating-cooling switching
- Integration with external sensors (e.g. keycard, window contact)
- Applications requiring multi-mode control outputs