reed relay. Contact form 1B SPST-NC. nominal voltage (VDC) 5. reed relay. Contact form 1A SPST-no. nominal voltage (VDC) 5. reed relay. Contact form 1B DPST-no. nominal voltage (VDC) 5. reed relay. Contact form 1B SPST-NC. nominal voltage (VDC) 12. reed relay. Contact form 1B SPDT-CO. nominal voltage (VDC) 5. reed relay. Contact form 1B DPST-no. nominal voltage (VDC) 12. reed relay. Contact form 1B DPST-no. nominal voltage (VDC) 24.