Is There A Problem With A Strike Being Energized For 8 Hours A Day Every Day?

Is there a problem with a strike being energized for 8 hours a day every day?

A customer wants the door to stay open for 8 hours each day. Until now we always use maglocks for that.


It really depends on the lock I would say. A fail safe strike operates just like a mag lock and is energized while locked. I am not sure if it is a fail secure only lock would affect its long term life under the conditions you described where a fail safe lock is designed to. Best bet? Ask the lock manufacturer.

Make sure it is rated for continuous duty. Also if it is fail-secure it may get very hot after a bit. Use DC power to avoid buzz.

It can certainly be done. As others have said, it depends on the strike. Avoid models like the HES 1006, which have the solenoid on the outside, for this application. If using any model of HES, be certain to use a SmartPak. Most other quality strikes do fine with extended unlocks. They can get warm, but usually not hot. If your strike does get hot, add a CRU2 current reduction unit from Command Access.

This is a good answer. Dan mentions using a HES SmartPac, which is a voltage bridge rectifier. It is HES branded, but it's handy to use with really any continuous duty strike.

What "voltage bridge rectifier" has to do with HES SmartPac unit?

Because that is what it is... ?

The product page even uses this term.

So, if Panel already provides DC voltage

why do we need another "voltage bridge rectifier"?

Because it is common to use separate power supplies to power locks (not all panels are located at the door or deliver sufficient pass-thru power), or they may be required by bid specs, and even a best practice from manufacturers.

AC power supplies types are pretty commonplace in low voltage work, including video surveillance and access control.

I can help explain this fundamental further if needed.

So, if Panel already provides DC voltage
why do we need another "voltage bridge rectifier"?

You wouldn't in that case.

But since this product is designed to run off AC or DC, they include it.

The main function of the unit is to reduce the voltage 25% after some period of extended duty.

Agree with all stated:)

I just did not like explanation

that unit is "voltage bridge rectifier" and "Because that is what it is..."

That all

Thank you for the info. I sent it over the requirements to my distributor, and he says the Seco-larm SD-995C24 is rated for continues duty when using DC.

Any feedback on that lock?


I wouldn't suggest that you use Seco-larm door releases unless you really don't care about forced entry. these locks plates are made of aluminum and don't hold up to much abuse.

Yeah, but the distributor has them in stock and is probably in a contest to win a free coffee cup from the manufacturer if they sell enough units.

What is a better one that you would recommend?

Adams Rite make solid stuff. I've never had a problem with them.

Adams Rite Link

What kind of mechanical lock is on the door? Do you have a picture?

In general, Seco-larm is relabeled budget stuff. Really cheap, but flimsy. The brand is a bunch of things like analog cameras, horns, strobes, and so on.

Usually the distributor (I'm guessing ADI) will do a no-questions asked exchange if a unit fails, but you have to spend labor to uninstall/reinstall any problems.