Can any digital TV set-top box accept digital TV signals?

Any digital TV set-top box can accept digital TV signals, but it must be turned on because it has a smart card. Generally, the set-top boxes of the Radio and Television Bureau are delivered to the network when the network is opened and the annual subscription fee is prepaid. Prices vary from place to place, ranging from 100 to 300 yuan. What brand is it? Because of its short service life, I don't know what brand is the best for the time being. My home is a set-top box, stb8 series, produced by Suzhou Tian Bai Broadband Network Technology Co., Ltd.