Yes, this radio physically fits into a Volvo 240 estate from 1991, as it has a 1-DIN installation dimension. The Volvo 240 has a 1-DIN slot as standard, but you may need an ISO adapter for cable and aerial as no cable set is included.
The radio's power supply has 3 connections: 0V/ground, 12V (steady plus) and a connection for the ignition (ignition on = radio on). If only the connection for the steady plus is supplied with voltage, the radio will only run for a maximum of one hour. If the ignition connection is also supplied with voltage, it will run "indefinitely".
The device supports DAB+ and therefore requires a suitable aerial in order to receive the digital radio signals optimally. The following DAB disc antenna is compatible with all Blaupunkt radios with phantom power: https://www.galaxus.ch/de/s4/product/blaupunkt-dab-antenne-aktiv-auto-antenne-20761109.
Hello, I still use the regular roof aerial for FM reception. For DAB+, I have had good experiences with a car window aerial (windscreen or side window).
Hello, unfortunately I can't answer your question, it was my mechanic who plugged it in. On the other hand I am super happy with the car radio, vintage look, modern function. Top in my 89😀 Audi quattro.