Siemens RDF301 HVAC room controller/thermostat, offered as one used unit. OBSERVED: - Siemens HVAC Products RDF301 marking - LCD display on the front - Power/control button, fan control button/icon, and temperature plus/minus buttons - White plastic enclosure with multiple rear screw-terminal connections - Rear label indicates AC 230 V +10%/-15%, 50/60 Hz, 4 VA, IP30, T50, and AC 230 V 5(2) A output rating - Visible terminal markings include Q1, Q2, Q3, Y11, Y21, M1, X1, X2, QET+, and QET- - Label states Country of Origin: China CONDITION: Used. Visible cosmetic wear, dirt, scratches, and discoloration are present. Please review all photos for physical condition. INCLUDED: - One Siemens RDF301 controller/thermostat unit NOT INCLUDED/NOT VISIBLE: - Separate mounting hardware - Wiring - Manual - Other accessories TESTING STATUS: Not tested. A powered display or functional operation was not demonstrated. Compatibility with any specific HVAC system is unverified. Electrical installation should be performed by a qualified person because the unit has exposed terminals and is marked for AC 230 V operation.