Bests & Worsts Reviews from Amazon

I have owned/installed 7 of these systems at my childrens/my home over the last 15 years, all the way back to the original "Reporter" models. The original Reporter had circuit boards made in the USA (printed on the boards). They all worked great at far distances. I could easily get a full 1300 feet(unobstructed view)of reception even though they only claimed they were good for 1000'. About 4-5 years ago Chamberlain company bought Reporter. Unfortunatly this is the same time I had to replace my old/original units (from weather/sun fatigue) of approx 10 years usage. The new units I ordered had the same transmitter (field unit) case cover and a slightly differnt receiver (house unit) cover, but the circuit bords were all made in China (printed right on the boards). These units were terrible. I tested 6 of these transmitters, each with an unobstructed view. The maximum reception I could get was 400' on one and only 150'/200' on all the other transmitters. All new fresh/expensive Li-Ion batteries here too, so no low voltage excuses. Quality control of these circuit boars is the big issue here!!!! So I ended up moving them very close to my house. I have lived with those for several years (not good). I just received 2 new sets of this new CWA2000 model on 8-24-2012. I tested both systems side by side on the exact same spot I have used for the last 15 years. These work even better than the original Reporter units. Upon inspection I see the units were assembled in Mexico on 7-25-21012 (yes, just 1 month ago!), so they are the latest/freshest you can get. No made in stamp on the boards, just on the outer plastic receiver case. With only a 1 month duration between assembly and delivery, it is very likely these circuit boards are made in the USA or Mexico. If they came from China there would be at least a 3 month delay. So bottom line, these new units work excellent! I just orderd several more sets for my kids homes (Christmas presents for all). To Note: New base unit in the house is smaller (nicer than old unit). Buzzer sound has changed. It is now more of a long, high pitched squeal (O.K.) rather than the old loud buzzzzzzzzzz, but plenty of volume to hear anywhere thru my large 3600 sq.ft. single level home. No relay outputs for a relay connection to an external bell or light, but with the Head units being so low in price now, just buy two systems if you want an additional Alarm sound elsewhere in your house/garage/shop. You can program the transmitters to more than 1 Head unit. That is what I did, so I hear when I'm out working in my detached shop.