The 100 identifies that this is the first model of the enviroMate100 TM automated bait station, The TM means it is Trade Marked; it is a patented design. EnviroMate100 TM is the first automated time controlled pre-feed and toxin dispensing device for use in pest control and for small creature feeding and monitoring in the world. The IP (intellectual property) is the property of Pestknow Ltd which is owned by Eco-land Ltd. Kaeo, Northland, New Zealand