Based on this product's specifications, here are some alternatives and similar models
Garden Balcony Heater Fieldmann FDZN 4010-T — outdoor balcony heating unit
Summary description:
Fieldmann FDZN 4010-T is a balcony/outdoor heating unit designed for localized warming of balconies and small outdoor areas. The model FDZN 4010-T provides focused heat output suitable for extending comfortable time outdoors on cool days. It is intended for mounting on balcony walls or railings and for spot heating in residential outdoor spaces.