This set of 2 Enforcer Seco-larm sensors SM-226L-3Q is a must-have for anyone looking to enhance their businesses surveillance. The sensors are designed to detect any movement.  With its top-of-the-line SECO-LARM brand, you can rest assured that you are in good hands. They are easy to install and require no special maintenance, making them a great choice for anyone who wants to keep their home safe and secure.