2Pcs Delay On Make Timer, QD-068, 0.03 to 10 Min, Adjustable Delay, 19-288 VAC OR DC (2)

Replaced both timers on overhead crane hoist controls. Took 5 minutes to synchronize the cut on adjustment between the two. Worked great. Better than the OEM

The desire was to have a delay in starting a reverse osmosis system pressure pump for several minutes. This will permit the captive pressure tank to supply the flow and start the pump only when the full system pressure drops off. It works very well with the adjustable switch set to the 3 minute mark.

Using a 24VAC HVAC application, I attempted to use this to drive a 24VAC relay with a time delay. Pretty simple eh?Well there's a problem. While the time delay is in effect, the relay would buzz and sometimes randomly latch. Not good. Too much leakage voltage. Both units had the same problem. Tried adding various resistors in parallel with the relay to increase the current draw through the delay module thinking that it was under some minimum current threshold. Still buzzed. Still too much leakage in the delay state no matter what I tried.Low quality? Not good QA? Unsure. But rather than sending them back, I decided to try cutting the jumper wire that is supposed to be used to enable high voltage use. Well guess what? That solved the relay buzzing during the delay state, and it's been working perfectly ever since... for weeks so far, actuating many times per day. Time delay seems to be accurate as well based on the dial setting.So even though you aren't supposed to cut the jumper for lower voltage applications (ie: 24VAC), I'm going to recommend going off-script here if you detect too much leakage during the off/delay state with 24VAC. Can't say if this trick will work with lower voltages or DC. But it should work with 24VAC and higher.This workaround saved me the hassle of sending them back and sourcing a different module, possibly at a higher cost. I hope this helps someone. And I also hope the manufacturer of this delay module fixes this bug in a future update.

Installed and this have been very reliable so far.

Technically this does function as a delay, but with a BIG caveat. Unless the LOAD requires significant amperage it will still pass voltage on instantly. Granted, all of these have this behavior but the leakage current is in the mA range, along with significant V-drop. The leakage from this however is sufficient to power a relay, which is generally what the load is meant to control to begin with.Got this as a replacement to control a furnace 2'nd stage (W2 - 24VAC). But this would energize W2 immediately, nullifying it's intended function. All 4 in the package behaved this way. The MINUTES delay dial is roughly accurate, will give it that much. But unless the LOAD has very low impedance this won't work as intended.**UPDATE**I tried cutting the wire for 110/220V as @TS suggested. Seems to be working normally with 24VAC. Though disconnecting the LOAD will also cause timer to reset now. But this is unlikely to be an issue under normal use. May just cause some confusion performing diagnostics.Seller did provide a full refund following my review. Credit the seller for that. But doesn't affect my initial score. Nor should the user have to do the exact opposite of the instructions for it to be operable.

I make time on delay with a relay to prevent electricity, in Mexico the electricity goes on and many times

Very easy to wire worked perfect