Pros: Well built, very sensitive, long range, sound and light indicators.
Reliable. Cons: Wide sensor range could be a problem depending on use intended.
Summary: I bought these alarms for some security and they worked great. They have great sensitivity and range. I had no problems with them and they are durable as well. An AC/DC adaptor can be used on the receiving unit. The external sensor is 9 volt and ... read more