1High Accuracy: The control range of this microcomputer time controller is from 1 minute to 168 hours, programmable for 7 days, with a daily timing error of 2S/day, providing you with more accurate timing results 2Versatile Scheduling: This time control switch can be set to 16 sets of on and off per day, making it easy to manage your daily work. Simple and convenient to operate, greatly improving efficiency and flexibility 3Multiple Functions: Equipped with clock adjustment and calibration function, with keyboard lock, this digital timer switch safeguards against accidental changes, ensuring your settings remain intact and secure 4Reliable Performance: Featuring silicone buttons and high power relay output, this time control switch is built to last. Its robust design ensures reliable use over extended periods, minimizing maintenance needs 5Installation and Power Supply: For seamless integration into your home or office, this timer switch adopts 35MM DIN rail mounting. Powered by a battery with 380mAh capacity, convenient to use anytime and anywhere 1 x Time ControlSwitch 1 x User Manual