There are a series of additional upgrades that can be done to ensure maximum uptime.  1.) Dual Cellular Carrier – For sites with lesser cellular quality or poor local mobile network operators (MNOs) a second cellular SIM card can be included. The hardware by default can support two SIM cards of which the most common are AT&T and Verizon. SwimSmart determines suitable MNO and tower configuration when onboarding new sites; however, dual carriers can be supplied by request at additional cost. 2.) Antenna Upgrades – Specialized antennas, cabling, and boosters can be used to dramatically increase not only range but link reliability. Sites that have weak signals or experience cell tower “bouncing” are suitable candidates for antenna upgrades. These upgrades are an inexpensive way to dramatically increase the reliability of a link if required. Not all sites are candidates for this upgrade as cell signals can indeed be “too strong” and be rejected by the MNO. 3.) Redundant Links – The most dramatic improvement to any site is providing secondary sources of internet connectivity (Fiber, Wi-Fi, etc). However, this is not always feasible and dependent on available resources or budget. For very large setups redundant links are highly recommended or even required. For smaller setups this is typically unnecessary and an appropriately calibrated cellular link is sufficient.  4.) Uninterruptible Power Supplies – For utility powered units, especially on old infrastructure or shared circuits, power outages can happen. An uninterruptible power supply (UPS) provides the unit with power for different durations depending on the setup.  Solar Powered Units – For our solar powered units the system also contains a battery which can be either the sole or a redundant source of power. Standalone solar powered units are engineered by SwimSmart specifically for reliable operation throughout the swim season. Standalone solar is also not dependent on local utility reliability. A redundant solar could be an option but typically more expensive than a standalone solar assembly.  Supercapacitor UPS – Eventually all utility powered units by default will support supercapacitor UPS (cUPS) brownout detection circuits. cUPS is not necessary for solar powered units. cUPS is a temporary power source even if utility power is down. When loss of power is detected, the cUPS will force non-critical loads off (such as the Beach Notification Light) and keep the critical components powered for 15 minutes; it will focus on notifying our staff that a brownout was detected. This is critical information for informing local beach maintenance points of contact to rapidly remediate power loss.