SadoTech 1st Generation Doorbell Ringtones Updated January 25, 2024 17:35 There are 52 different tunes for the SadoTech 1st Generation Doorbells. You may download the file below: SadoTech 1st Generation Doorbell Ringtones (Model C, CX, CXR, CXRi, B, G, F, FXR, K, K2, H).rar 20 MB Download