[Multiple Setting 5 Modes] Up to 20 ON/OFF schedules for 7-day repeat cycles or a single-day setting to meet your needs; pool controller has options for Always ON/ OFF, AUTO ON/OFF, and Daylight Saving Time (DST) modes; turn it ON/OFF or change modes using the MODE button; multiple modes day settings to save on your electric bill [Heavy Duty 40 AMP Versatile] With 40 Amp 2HP 120/240/277 VAC, the pool pump timer control up to 2 units at once; designed for outdoor/indoor high-power appliances like pool pumps, heaters, filters, and other motor-driven equipment; giving peace of mind and convenience for managing your pool and outdoor equipment [Built-in Battery Keeps Settings] Backup battery included with 3 months available; No need to repeat settings for 7-day pool timer switch in case of power failure; hassle-free use; No more worry about losing your previous timing and settings [Weather-resistant Durable] Waterproof resin PC housing with flame-retardant insulation resists UV high temperatures; 2 water outlet holes prevent water from entering the junction box; pool pump timer outdoor operate from -40? to 140? for long-lasting performance; No need to turn it off or store it in bad weather [Easy Installation] Removable timer module makes simple wiring and hassle-free; heavy-duty pool timer wiring apertures in 2 sizes (1/2'' and 3/4'') to suit your needs; included wiring caps to simplify the installation process and ensure a smooth setup