Electrical and electronic burglar alarms; fire alarms; security and fire alarms; theft alarms; electronic or electrical sensors for sensing battery level, water level, fire, smoke, speed and location, and unauthorized tampering with the sensor; electronic or electrical detectors for detecting battery level, water level, fire, smoke, speed and location, and unauthorized tampering with the detector; sensors for the determination of temperatures, positions and distances; detectors for the determination of temperatures, positions and distances; telecommunications software and hardware for monitoring and alerting remote sensor status via the internet or text message; boat automation systems comprising wireless and wired controllers, controlled devices, and software for lighting, HVAC, refrigerators, security, safety and other boat monitoring and control applications; vehicle and boat tracking devices, comprised of cellular radio modules, computer software and computer hardware, sensors, transmitters, receivers and global positioning satellite receivers, all for use in connection with vehicle and boat tracking, vehicle and boat monitoring and anti-theft vehicle and boat alarms