4x Nemaxx WL2 wireless smoke detector smoke detector interconnectable - according to DIN EN 14604

Good product. The instructions are in German, but the seller sent an email with English instructions before they arrived so this was great. Easy to setup and link together. (The cats didn't like the testing phase)One of them did arrive faulty but after a quick email to the seller they sent me a new one. With this and the instructions email, great customer service and good product.

Installation easy no problems. Instructions clear and easy to follow.Work great all sound when tested. All radio interconnect works great one sounds all sound.Been installed a fee weeks now only one false alarm caused by son cooking. Within a few seconds all were sounding.Recommended.

Bought pack of 4.All supplied with needed batteries. Odd that it takes 9v and 3 AA batteries on each unit - seems the 9v is for the smoke detection and the AA's for the radio link. I guess this is a mash up of a standard smoke detector and some kind of radio beacon.Anyway, linking them together was easy as was installing the batteries.The units were VERY VERY VERY difficult to twist onto their mounting bases the first few times I had to do this 'off ceiling' to loosen them up a bit. Suggest holding the base plate in a towel to avoid it cutting into your hands as you struggle to twist fit the alarm body onto it these first few times.The range is good - covering top of 1st floor stairs, bottom of stairs and I installed one in the kitchen (my elderly uncle no longer cooks for himself so if there is smoke in there there is a problem!) and I even installed one some 20 metres away in a garage as he keeps his old dryer in there.Really good.Instructions were clear - many of the pages were in other languages but the english ones I understood no problem.

Updated may 21018I've sliced it down to 1 star from 2. It should be 0.They go off at random. I have no idea how to silence. The instructions are poor. I can't find instructions on the web.I have replaced with 4 fire angels. These fitted into the holes I already had. Connected to form their linkage within 5 seconds per device. All fitted in place within under 30 minutes.cost many times more, but from a reputable company that will guarantee them for 5 years and has plenty of material on the web. Don't waste your time with nemaxx.Original reviewI've had these detectors for around 2 years.The instructions for set up are in English, but barely functional. There is nothing on led signals, how to silence or hush an alarm. The interlinking explanation isn't great.Fitting to the ceiling is easy. Fitting batteries in less so. If you want alignment or a particular orientation of buttons, fit with care, as the holes are offset to buttons.They seem to work and flash away periodically as they should. I test them every so often. They sound.But this is a bit of a question on confidence. They go off at random, with no obvious trigger. They don't sound as an interlinked set as you'd expect, which they should. In theory I've got them spaced in vertical line across floors so they are in distance, with the master in the middle, so it should reach, but maybe 60m is without walls and floors etc..? Which isn't real life.They are probably fine, but if it's fire safety, the probably isn't good enough is it.Nemaxx - Sort out the instructions so it's a decent manual not 1 side of a4. Make it clear what a constant flashing red led means and how to reset if that is what is required. Explain how to hush a unit that is sounding. If the system needs a reset on replacing batteries, explain this.It could be that this is a 5 star system and 5 star price. But without clear operating instructions it can only be 2 to reflect a basic level of function with a measure of irritation thrown in.

These work spot on and are a lot cheaper than similar smoke detectors. They also come with batteries.

As single, stand along detectors these work fine but I had problems getting them to talk to one another when used on different floors of the house. You have to press a button on the master unit (telling it to broadcast an 'I am here signal' then press a button on the slave unit. Bearing in mind both are on the ceiling of different rooms this is difficult in the time span allowed, You could take the slave unit to the master but each unit has the clever device that stops you fitting it into the seating (which is screwed to the wall or ceiling) if there are no batteries present and will push the batteries out if toy are not careful. Once a unit looses power it has to be reconfigured. The task of reconfiguring all 4 units when the batteries in the main unit fail is not one I am looking forward to.

Solid and sturdy, easy to link up. Loud as hell.

These are brilliant... so easy to link together... and when they go off they are load all around the house.