Questions about Eberle Controls Room thermostat surface mount, flush

According to my research, the Eberle Controls RTR 9121 room thermostat has a normally closed contact. For more information and technical details, you can view the manufacturer's data sheet at the following link: https://www.eberle.de/fileadmin/Datenblatt/RTR_9121_9164_9311_9721.pdf For applications that require a changeover contact (NO/NC), Eberle offers the RTR 9721 model: https://www.galaxus.ch/de/s2/product/eberle-controls-raumthermostat-aufputz-unterp-thermostat-8452709.