EASY TO PROGRAM - Clockwise rotate the dial it to the current time, push the pins down to set your on time and then toggle the slide switch to ; finally plug in your device; the timer socket will turn on /off your appliance plugged in as your schedule CUSTOMIZABLE- Each pin represents 15 min for added customization; set up to as many as 96 ON/OFF programs to automate your home appliances, save energy and reduce your electricity bill FOR INDOOR USE- it is designed for indoor use only, ideal for Christmas lights/lamp/grow light/fish tank/router/coffee maker machine etc. Please note that do not connect the device which beyond its max load CONVENIENT- Always on and TIMER mode to choose, this timer switch automatically turns your appliance on/off; eliminating the need to manually switch each time, the schedule is daily repeat, free from the trouble of switching appliances every day