It keep blink when I got two times with same products. End it up now.

It did not flash when using doorbell or telephone rings at all. Item was returned.

I use Sylvania Double Life Soft White 60 Watt light bulbs for my "deaf" lamps---that is, they are lamps hooked up to the Sonic Alert receivers. Those receivers do not last long. They'll work for a few years and then stop. They'll just stop or make a really weird ticking/buzzing/pulsing noise. Scary because I can't hear it, but other people can. I've been lucky that none caught on fire. I can't figure out why. I've contacted Sonic Alert and it appears to me that they outsource the products to/from China. There's not that many people at the Sonic Alert headquarters---it takes forever for them to answer an email and when I call, they're a little abrupt, and they told me that they will not or cannot repair the receivers. I don't know if the receivers wear out faster in households that have Wi-Fi because of the constant stimulation. I know that when my neighbors' Wi-Fi comes on, my Sonic Alert receivers (especially the strobe ones) flash like crazy. It's like a house possessed. I think the deaf equipment industry needs to tackle the challenge of the new light bulbs AND electrical interference from Wi-Fi devices and routers. In the meanwhile, I don't know what I am going to do because I cannot afford to keep replacing the receivers. I have/had at least 7 in my house (strobe and lamp). Right now, only two work. The rest... pfft, garbage. I also asked Sonic Alert if they recycle old electronics. Nope. So, I have to take these out to the recycling center and dump them into the electronics bin. Eek. Right now, I am exploring other brands, but I have a feeling that all brands have this problem with Wi-Fi interference. I think it's the Wi-Fi interference that wears out Deaf equipment faster than they are designed to. I have gotten to the point where I think I should just stop using and buying Deaf equipment because they don't work as well as they should. **WiFi does not impact these devices since the system uses a line carry signal through the outlet

satisfied as always with deaf-related equipments.

I love them. They are pretty reliable but after a few years, they wear out by either not working or blinking like lightning/making ticking noise. I continue to ship them to the warehouse and they give me an extended 5-year warranty. A friend of mine has her for many years and never have any problem. I am in search of another device to replace it but so far I haven't found one.

It is working OK but only problem is sometimes it is blinking like lightning without any calls. I have to move to other location and see if it wont be blinking without any calls otherwise would buy another brand flasher and receiver.

Got same result as Unsatsfy. It made a fast blinks for no reason. Sometime it won't turn on or off when pressing button.

This is trash! It works OK for a while and then acts weird. Emailed company and no response from company. Will not buy this again.