Here is an inexpensive yet highly effective way to protect fire extinguishers and a wide range of equipment such as fire hoses, and sprinkler shutoff valves. These cabinet alarms also protect medicine and gun cabinets from theft. These cabinet alarms are compact, highly effective and extremely versatile. They do not interfere with fire fighting or use of the protected item in any way. The simplicity of the design contributes to its high degree of reliability.