Specifications: Input voltage: 24VAC/DC, 110VAC, 220VAC (optional) Contact voltage (output): 220V to 250VAC 50/60Hz Hysteresis: 2 sec/day (25°C) ON/OFF operation: 17 ON/OFF Power: 7.5VA (MAX) Display: LCD Minimum Interval: 1 minute Switch contact: 1 changeover switch Power: lithium battery Operating temperature: -10°C to +40°C Humidity: 35~85% RH Instruction: 1.Press the button C to turn on the switch. At first, press the "time" button (bottom middle of C and C/R), then press D+, H+, M+ to set the clock to the current time. Programming: Step Button Programming 1 Press P Setting 1 hour ON (display 1on) 2 Press H+/M+ Setting hours and minutes 3 Press D+ Select Same Every Day, Different Every Day, MO-FR, MO-SA, SA-SU, MO WE FR, TU TH SA, MO-WE, TH-SA. (Even if everyday, no need to press this button) 4 Press P Setting 1 hour OFF (display 1 off) 5 Press Press H+/M+ Adjust hours and minutes off 6 Press D+ If you want the same setting every day, you don't have to need press this button 7 Repeat steps 2~6 Set 2-17 hour on/off 8 Press "Time" End If the setting is incorrect, please press C/R to cancel or reset the programs. If all buttons are locked (no response), press and hold C/R for 8 seconds to unlock. If you don't need 17 on/off settings, press "time" to finish. Package includes: 1 x Timer Switch <h3>Value Concept</h3>Providing you with quality and rewarding shopping experience is what we are working hard towards. Note: The data is all manual measurement, please allow 1-3cm error; due to the difference in light and display, there would be a certain color difference, please understand. refer to the actual object received.