1. Kukula kang'ono, kosavuta kugwira ntchito
2. Khalani oyenera onse ogwirizana
3. Itha kulumikizidwa ndi ma 1 ~ 8
4. WD20000-4 ikhoza kulumikizidwa ndi masensa anayi
5. WD200-8 imatha kulumikizidwa ndi masensa asanu ndi atatu
6. RS485 kapena Down Rs232 Doko