An electronic brick is an electronic module which can be assembled like Lego bricks simply by plugging in and pulling out. Compared to traditional universal boards and circuit modules assembled with various electronic components electronic brick has standardized interfaces plug and play simplifying construction of prototype circuit on ones own. There are many types of electronic bricks and we provide more than twenty types with different functions including buttons sensors Bluetooth modules etc whose functions cover from sensor to motor drive from Ethernet to wireless communication via Bluetooth and so on. We will continue to add more types to meet the various needs of different projects. Electronic brick of PIR sensor can be connected to digital I/O port and used in anti-theft system or to control lights in the staircase of buildings. When sensor detects the infrared signals of human body it outputs high level; generally speaking it outputs low level. Features 1. Plug and play easy to use. Compatible with the mainstream 2.54 interfaces and 4-Pin Grove interfaces in the market. 2. With use of M4 standard fixed holes compatible with M4-standard kits such as Lego and Makeblock. Specifications PCB size 24.0mm X 21.0mm X 1.6mm Working voltage 5V DC Operating voltage 3.3V DC Compatible interfaces 2.54 3-pin interface and 4-pin Grove interface(1) Note 1: S for digital output port V and G for voltage at the common collector and ground respectively Electrical characteristics Parameter Min. Typical Max. Unit Working voltage 4.5 5 20 VDC Digital output voltage(VCC=5V) 0 - 3.3 V Working current(VCC=5V) - 50 - uA Detection angle(solid angle) - - 110 ° Detection range - - 7 m Delay time of high level - 2.5 - s