"MOBILELOCK is a portable wireless alarm system with GPS designed to protect high value and mobile assets. It is completely weatherproof and lasts over a month on a single recharge. Multiple sensors are built in including vibration, temperature, movement, tilt, tamper, low battery and lost power and up to 10 Bluetooth sensors can be connected wirelessly. Selecting sensors, arm/disrming and customizing can be done through your secure online account. A built in siren can also be activated to sound in an alarm event as a deterrant or remain silent for stealth notification and locating. When a sensor is tripped users can be notified via text message, email or phone call. In the event the asset is stolen, missing or needs to be located, users can log into their account and access imagery that shows where the device is on a map. One time $20 activation fee and monthly service fee of $19.95/ea applies.