HC-SR501 with this sensor make your Raspberry Pi or Arduino to a motion detector. With the two adjusting screws you can adjust the sensitivity and set the time instructions: Sensitivity: Right Turn, distance increase (up to 7 m) wash inside out, distance reduce (up to 3 m set the time: Right Turn, time increase (to 300s) according to the wash inside out, time reduce (up to 5s) Technical Data: Operating voltage: 5 – 20 V DC – Operation current: 65µA – Level The output voltage: 3.3 V High/0 V Low – Delay time can be adjusted (0.3 to 18 seconds) switching time (Adjustable): 5 – 200 seconds – Effective range (Adjustable): 3 – 7 meters – Blockade time: 0.2 seconds, detection range: 140 °, trigger method: L unrepeatable trigger/H repeatable trigger – Trigger can jumper simply mode to the other. – Operating Temperature: – 15 – 70 ° Dimensions Board: 32 (W) x 24 mm screws hole spacing: 28 mm – Hole diameter: 2 mm, diameter sensor Lens: 23 mm Please note that unfortunately we do not have any guarantee to the correct this data as possible. HC-SR04 with IO trigger for at least 10us of high level signal. The module automatically sends eight 40 kHz signals and displays safe, whether it is a pulse signal back. If the signal back high, you can see time of high output IO duration is the time from send of the ultrasonic signal to return. Test distance = (High Time x at the speed of sound (340 m/s))/2 Power Supply: 5 V DC, quiescent current: < 2 mA, effective angle: < 15 ° Range: 2 cm ~ 500 cm Resolution: 0.3 cm
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