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Microwave sensors transmit and receive K-Band microwaves using Doppler Radar technology. Waves are transmitted at an accurate frequency and the returning signals are analyzed for changes in the initial frequency. Every movement in the detection zone induces a frequency variation which triggers a detection. The frequency increases with approaching targets and decreases with departing targets. The microwave sensor is a motion detector which typically controls activation (opening) of a door.
Infrared sensors transmit and receive infrared energy while using the ground as a reference. The sensor "takes a picture" of the ground and compares that momentary picture with its initial reference picture. Each person or object present in the detection zone will change the reference picture and trigger a detection. The infrared sensor can detect a static or moving object within a predetermined detection zone, in order to, depending on the sensor, activate (open) a door or provide safety by preventing an already open door from closing.
Dual technology sensors combine the benefits of both microwave and infrared technology into one sensor. This solution provides the optimal activation detection zones & presence / safety detection zones.
Induction loops detect the presence of metallic objects by utilizing a circuit with an inductor (loop of copper wire) and a capacitance with a specific resonant frequency. Induction technology is primarily used to detect the presence of vehicles in front of gates, industrial doors or at traffic lights.
Electromagnetic Lock or Maglock is a locking device that consists of an electromagnet (installed onto the door frame) and an armature plate (installed onto the door). Passing a current through the electromagnet creates a magnetic force that attracts the armature plate, holding the door shut.
Knowing Act refers to the act of intentionally activating an automatic door. For example, pressing a push plate switch with the knowledge of what will happen, the activation (opening) of the door.
Microwave – Knowing Act
Knowing act microwave sensors function on the same principles as their overhead counterparts. In this case, activation occurs due to intentionally moving an object within the detection range of the motion sensor (i.e. waving a hand). This idea of detecting motion for activation, instead of physical touch, greatly reduces the spread of contaminants within an environment.
Capacitance – Knowing Act
Capacitance is the ability of an object to store an electrical charge. Capacitive sensors require a dynamic excitation of its charge to trigger an activation. When the charge eminating from a capacitive object (such as the human hand) intersects with the charge of the capacitive sensor, the sensor causes activation. This reduces false detections from non-charged capacitive moving objects.
Ultimate solution for safety and activation
Standalone door mounted safety sensor
Activation & Safety sensor
36" low profile push plate
Magic Switch – MS08
Touchless microwave activation sensors
Magic Switch – MS21
Touchless capacitive activation sensors
request to exit sensor
magnetic locking devices
Digital induction loop detector