5Pcs Geekcreit? DC 12V LED Display Digital Delay Timer Control Switch Module PLCFeature: It's a new digital LED countdown display 12v delay module module. It can be widely used with various control switch places. It can set the delay time,can press set buttons. After setting up, power up setting value is previous setting delay time as we set last time (power down memory function). It's precision delay, error 0. 01% per second, a delay of 0 999 seconds , LED changes per seconds. LED digital display, normally open trigger delay 12V