5pcs infrared electronic

Feature: This product uses the pyroelectric infrared sensors to detect, can be monitored within 8-15 meter range, when person or animal is moving, it will automatically detect and issued 90 db alarm high-intensity sound to scare the intruder or provoke the security police. Suitable for families, warehouses, shops, sheds and other security places. Without any external connections, compact portable design, can be placed anywhere. This kit uses 4*AAA battery, suitable for electronics enthusiasts and vocational school students to practice professional electronic assembly. The package does not contain a battery. Precautions: The probe should not be face to outdoor avoid false alarms caused by idlers move Probe should away from cold or heat source, such as air conditioning vent, heating, air conditioners, stoves, etc. Installation should avoid sunlight and car lights direct shot the probe Mounted on a corner or wall, recommend installation height is 1.5 to 3 meters off the ground, to prevent small animals false positives Note: We don't supply any manuals, only has schematic, please note this before you buy it, sorry for all the inconvenience. Package included: 5 x Infrared Electronic Alarm Kit

5Pcs Infrared Obstacle Avoidance Sensor For Arduino Smart Car Robot Description: The sensor module light is adaptable to the environment, the working voltage of 3.3 V to 5 V. It has a pair of infrared transmitting and receiving tube, when detecting direction meet with obstacles (reflecting surface), reflected infrared receiving by the tube. After the comparator circuit processing, green indicator will light up, at the same time the signal output interface output a digital signal (a low level signal), can be adjust the detection distance through the potentiometer knob, effective distance range 2 ~ 80 cm, easy to assemble and use. So it can be widely used in robot obstacle avoidance, obstacle avoidance car, line count, and so on many occasions. Package included: 5 x Arduino obstacle avoidance sensor

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Feature: Working voltage: 5V 8-channel infrared detector Applications: Robot Smart Car Laboratory DIY Package Included: 5 x Sensor Module

5Pcs DIY Electronic SMD Components Solder Practice Plate Kit For Training Description: Electronic DIY kit SMD components solder practice plate for training w/ 8 categories components Features: Including 8 categories 75pcs components, with corresponding test point 1. Resistor– 0805(30pcs, one row in series, with test point) 2. Resistor– 0603(10pcs, all in series, with test point) 3. Exclusion– 0603(7pcs, all in series, with test point) 4. Capacitor– 0805(14pcs, all in series, with test point) 5. Diode– 3216(6pcs, all in series, with test point) 6. Triode– SOT-23(6pcs, with test point) 7. Integrated chips– SO-14(2pcs, with test point) 8. Integrated chips– LQFP44(2pcs, with test point) Package included: 5 x DIY SMD Components Solder Practice Plate Kit