DC 12V Delay Relay Board Delay Turn On/Turn Off Switch Module with Timer The product is registered Trademark by GERI&reg; . With 8 time ranges selected shortest 0.1s most up to 1 hour Protection against power reversal protection diode, better protection module Can be accessed by a large current load (250V ac 10A or 30V dc 10A) With delay adjustment potentiometer clockwise adjustment time longer