Siemens Building Technology 536-778 Sensor R-407A Can I use this on

Can I use this on a heat pump or just an air conditioner

This part number typically refers to the display module itself

but the technical specifications are identical

and TRR01729

Can this relay be used on 120V systems

Siemens Building Technology 536-778 Sensor R-407A Can I use this onThe Siemens Building Technology 536 778 is a high precision outside air temperature sensor engineered for demanding building automation and HVAC control strategies. Utilizing a 100k Ohm NTC thermistor sensing element, this unit provides a highly stable resistance output that corresponds to ambient thermal changes, ensuring your building controller receives accurate data for outdoor reset and ventilation logic. Housed in a ruggedized metal enclosure,