1There are four buttons, with backlight function, with query function, the set time can be arbitrarily searched 2With key lock, with lock screen function, with poweroff memory function, onetime setting, longterm use, daily cycle 316 groups of timing can be reserved, plus a set of countdown, a total of 17 groups, of which the 16th and 17th groups can be set to seconds, a total of 8 modes, simple design, flexible operation. 4Made with imported chips internally and produced with advanced production equipment. 5Made of flameretardant materials, every plastic particle is flameretardant and can be assured used.