Best Supra Key Phone I'm A New Realtor In California. Does A SUPRA Key Need To Be Plugged Into The Phone Line Every Night?

I'm a new Realtor in California. Does a SUPRA key need to be plugged into the phone line every night? - best supra key phone

I was about to buy a code on but I have a landline number so I can plug in every night. Do I need to really stick it to update every night, or I can use it to plug?