TowerSentry is a Tower light monitoring service that does business in the cell tower monitoring business. The tower monitoring can be known by many names such as light monitoring service, cell site monitoring, obstruction light monitoring, remote tower monitoring, wireless tower monitoring just to name a few. The same light monitoring can be used on wind turbine monitoring, windmill monitoring, solar light monitoring, and solar tower monitoring. Tower lighting needs monitoring to insure the safety of the flying public as it is imperative that the obstruction lighting be functional at all times needed so the towers are visible to pilots. To monitor for tower lighting you only need a TSMS box with dry contacts which when connected will relay signals to the appropriate NOC center to alert of a problem with the tower lighting. By using TowerSentry Monitoring Services your company can file for a Quarterly Light Inspection waiver.