Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: This should work with a Reecom R-1630? It has a 3.5mm Ext. alert jack just like the Midland radios.
Document: So in that sense I considered it a very worthwhile investment for him.The Midland strobe is designed to work with two of Midlands most popular table top radios. The WR-100 and 300 models. It cannot come any easier to install. It simply plugs into a jack in the back of the radio, and then 3 AAA batteries are installed in the actual strobe. (The plug serves as a feed to pick up the emergency alerts, not to operate the flash feature).
The jack on Midland radios (such as WR-100) are the normal standard into which several external so called "ambient weather" warning devices can be plugged.AAA batts, AA batts, AC mains, 2 million candle power police type, multiple flashing LED's, built in 25 foot long connecting wires with proper plugjack, etc.The advantage of this one is the lower price.And a myriad "ambient weather" antennas all work with these radios. The RCA jack is standard many of these.
This item is a joke! It does not work with ALL Midland weather radios so beware. I hooked up mine and it is a waste of money. Maybe I did not know what I was expecting. I think the cord needs to be longer and the mount needs to have more options besides a one-time sticky pad. It flashes as the alert is going off only! It would have been better if it remained flashing to remind you an alert has been put out.
i feel the strobe work's well and is an excellent upgrade to one's  weather radio.Midland 18-STR Strobe Light for Weather and All Hazards Alert Radios
Plugged it into my Midland Weather Radio... when the alert goes off it just sits there and doesn't even blink once... WASTE OF MONEY! Also, if you're getting this for someone who is Deaf or Hard of Hearing - it actually might be dangerous since it doesn't work as advertised! Buyer Be Warned!
This strobe is great, I bought two: one for my WR-120, and WR-300. It flashes bright, too! People on here have been complaining idiotically that it doesn't flash long enough. All midland radios have the option to set your alert method to &#34;tone&#34;. This will make your radio keep beeping, and flashing, until you come over and acknowledge it. There, problem solved! Worked great for me for the weekly test so far.
Item works very well. Can be seen throughout office area when bad weather comes to town. If you work in offices with limited access to windows (who doesn't?) this is a handy item to have. Lets folks know they should pay better attention to the latest weather alerts affecting the local area -- perhaps even beating the bad weather home. If your weather radio supports devices like this one, it's well worth the extra investment.
The reason this light goes off when the alarm sound stops, is that it is simply connected to same output.This very same light is available as a bike light, at my local dollar store. It appears that Midland has simply replaced the battery with a cable and connector Jack. The bike light has bright LEDs and various flashing/blinking options.This should be redesigned so that the light stays on, until the owner resets it!
I selected this product when I was purchasing the WR-300 weather alert radio. The website showed this item as an accessory. I connected it and havent seen it work once, even though there has been plenty of thunderstorm alerts and warnings. After using the WR-300 and seen the alert LEDs on the radio, I think this accessory is unnecessary.
I purchased this for use with the Sangean CL-100 Weather radio, and so far I have not seen it work. I do not know if this is because I have the radio set for 'Voice' alert, or because I have only seen the 'Weekly tests' so far. But this is not lighting up for me. If it had worked, I would have wanted the cable to be longer, but unless it works that's not much of an issue.
Answer: The only way to know for sure is to check it.  Mine did not work with the Midland nor the First Alert but works just fine with my Radio Shack weather radio.  Unknown why, because they all appear to have the same jacks and the light actually came with the Midland.