Search for: Log In Register OpenSprinkler › Forums › Hardware Questions › OpenSprinkler › OS 3.4 DC: Missing part type Z1 – Z8 in schematic This topic has 2 replies, 2 voices, and was last updated 1 day, 9 hours ago by jofland. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts June 22, 2026 at 1:53 pm #86580 joflandParticipant I would like to build an OS 3.4 DC (rev 4) by my own. In schematic https://github.com/OpenSprinkler/OpenSprinkler-Hardware/blob/master/OS/3.4/DC/OS34DC_schematic.pdf the part type of Z1 – Z8 is missing. I would guess it is a SMBJ24A like in V 3.3? Can anyone confirm this? June 22, 2026 at 1:55 pm #86581 RayKeymaster Did you mean T1-T8? The schematic clearly shows them as SMBJ24A. Z1-Z8 are the wire names, not part names. June 22, 2026 at 2:06 pm #86583 joflandParticipant Thank you for your quick reply. Yes I meant T1-T8. I was just to blind to follow the green path to J2 :-). Author Posts Viewing 3 posts - 1 through 3 (of 3 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In OpenSprinkler › Forums › Hardware Questions › OpenSprinkler › OS 3.4 DC: Missing part type Z1 – Z8 in schematic