Abstract: A device for monitoring and controlling equipment, such as an agricultural irrigation system. The device can be called by an ordinary telephone from anywhere in the world and after answering the telephone the device will monitor and indicate to the caller the system status, that is, whether the system and certain system parameters are operating. If the caller is calling on a conventional Touch-Tone* telephone the caller can then access the system with a confidential three digit access code. (*Touch-Tone is a registered Trademark of the American Telephone and Telegraph Company.) If the system recognizes and verifies the access code the calling operator, with the use of two digit commands, can start and stop system components as well as monitor those and other components to assure that the controlled system is operating properly.