Feature●Preset Astronomic Clock based on your state/region | Easy setup clock and timer functions with battery-backup●Built in Photocell for using Dusk-to-Dawn function | Rated for use with low-voltage transformers●Able to use with other landscape electrical boxes | Timer can be installed INSIDE your home for easy access●Control your existing transformer but with more options | Mounting timer INDOORS will prolong lifetime●Operating temperature range: -35°F to 120°FDescription KhanTech Landscape indoor & outdoor Astronomic timer for low voltage landscape lighting transformer using digital programmable LCD module. This multi-functional timer allows the choice of using the clock/timer with the built-in photocell mounted outside or the astronomic timer which can be mounted indoors or outdoors. Dual Grounded Receptacles on both sides Sleek and compact