PIR-234/PIR-234L series modules have 4 PIR Motion Sensors to increase sensitivity and the ability to detect infrared waves generated by the human body within a coverage area of 360° coverage area with a diameter of approximately 9 meters(PIR-234) or 14 meters(PIR-234L). These modules are designed for indoor motion detection and can be configured to automatically turn on lights when motion is detected. The modules also contain a temperature and humidity sensor for measuring indoor temperature and humidity. Alternatively, they can be configured to activate a fire alarm. A wide range of interface connections can be selected to meet individual needs, including RS-485/Ethernet and supports for the DCON and Modbus RTU/ TCP protocols. They also can be easily integrated into existing HMI/SCADA/central control systems. A free Utility is included, allowing configuration information and data to be displayed in a powerful chart format and can be exported to Microsoft Excel. The modules feature screw-free & quick-connect connector as well as DIP and rotary switches, making the modules easy to install, repair, and maintain. The casing of each module is made from UL94-V2 rated fireproof material, and the white minimalist exterior design ensures they blend well with interior decoration.