An adaptahorn version of 892 that hasn’t been working. I can’t figure out the problem. The Edwards 894b is a 4 wire mechanical horn.
The front(with grille):
The back(of horn and grille):
Specifications:
How did you get the cover off!? O_O
Can you please explain what you have already tried to do so that I have somewhere to start with helping you? Thanks
I’ve used one nine volt battery to power it up(latest failed attempt. But I have a felling it got fried from an incident where I plugged it into a wall outlet and I probably need to replace a component.
Look at the grille. The top has a piece that is meant for easy removal. And a screw on the bottom is supposed to keep it in place.
Increasing the voltage 10%, you’ll be OK. Increasing the voltage 1000%, that would be the problem! Not much to fix, just a really nice paperweight now…
Well said Lambda.
With s System Sensor 2424th, its 4 wire 24v, does that apply?
The 2424TH will accept 20-29VDC according to this technical document: System Sensor | Honeywell Building Technologies. 10% of 24VDC is 2.4VDC, which would give an approximate safe voltage range of 21.6-26.4VDC, which still falls within the actual voltage range. So in this case it would be safe to rely on the 10% tolerance rule.
Kcin556 pretty much provided the specifications for the 2424th. But you can safely throw whatever voltages the manufacturer specifies in the data sheet. If they list the operating voltage as “6-30VDC”, then that is your safe and listed voltage for the device. Give it 30.1VDC, and the device is no longer UL listed and the manufacturer is no longer liable for its safe operation. I don’t know of any smoke detector that will take both 12 or 24VDC -and- 120VAC. Gentex makes detectors that will take either and look the same, but don’t believe they make a dual voltage unit.
Yeah you blew out the coil. At least it wasn’t something expensive like an FACP but this is another reason why I always urge people to ask questions if they’re unsure.