Unlike conventional cameras that can only serve the monitoring purpose, a PIR camera, by virtue of the built-in PIR sensor, detects passive infrared radiation emitted from heat sources. This function then further supports deterrence measures enabled by whether connecting to external alarm devices or built-in components, for example a siren or light. Hikvision offers a wide selection of PIR cameras ranging from 2 MP to 5 MP, available in both bullet and dome forms. These cameras not only detect, but also help deter would-be intruders by triggering visual or audio alarms. With up to a 11-meter detection distance, the PIR camera covers sufficient areas no matter you need it for an open space, for example a warehouse, or a confined area like the entrance of a store.
