This wireless video door phone is an extra monitor for the Seco-Larm Enforcer DP-236-MQ system. With a screen size of 86mm, it provides clear visibility of the surrounding area. The brand, Seco-Larm, is known for its quality products and this monitor is no exception. It is perfect for those who want to keep an eye on their property from a bird's eye view. Whether you're using it for work or home, this monitor is a great addition to your setup.