Tampering with or damaging a sprinkler controller can cost the property owner thousands of dollars in landscaping losses. The ClockGuard™ is the perfect solution and gives peace of mind to property owners and landscape managers who wish to keep unauthorized people from adjusting their timers. It allows for complete access, is easy to install and is a strong deterrent against vandalism or theft. The ClockGuard™ has rounded corners as a safeguard for passing pedestrians (especially since these items are occasionally installed at head height). The ClockGuard allows for complete access for programming & service work, and has an opening under the unit to allow access for a power conduit and controller wiring. The hinges of the ClockGuard are internally mounted for added security and allow for complete access to the controller for programming or service work. The low maintenance installation takes just minutes and it comes with all tamper resistant mounting hardware needed.