Vee Kay Vikram & Co. Supplies Easy to Install Pig Signaller. Vee Kay Vikram & Co. Is an ISO 9001: 2000 accredited company. The Easy to Install Pig Signaller is available in sizes ranging from 2" NB to 48" NB. The Pig Signaller is available with Extension or without extension, Electrical Flame proof switching and comes in a wide range of construction materials.