The signal is operated by sensors when a locomotive passes over them. From green it turns to red and 3 seconds later turns to yellow. After a further 3 seconds it returns to green. My aim is to stock the full range of Kato Unitrack in N gauge at competitive discounted prices with special offers at regular intervals All items offered for sale are new and in stock. Orders placed and paid for before 1.00pm Monday to Friday will normally be shipped on the same day |