milwrd posted:... Unfortunately the interlock design works like this: turn relay #1 on and it's latched. Turning relay #2 on or for that matter any of the remaining four remaining relays and #1 turns off...
So for the record, for this particular "latching" relay module, the interlock mode turns on relay #N and turns off all other relays...so only one relay is ever on at a time. Activating relay 1 turns off 2,3,4,5,6. Activating relay 2 turns off 1,3,4,5,6. Activating relay 3 turns off 1,2,4,5,6. And so on. Do I have this right?
As you say, you can use just 2 of the 6 relays to make a one-channel Tortoise controller. If you're paying only $10 for the module, that might be less than what you'd pay for a ready-to-go single DPDT latching relay module with screw-terminal connections!
