1,Material:High quality electric part
<br />2,Borad PCB Size:3.7x2.5x2cm(1.46x0.98x0.79inch)
<br />3,Startup Time:2 Seconds to get a measure on room volume
<br />4,Working Voltage :5V(DC)- 20V; Current drain:60uA
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<br />The sensitivity and holding time can be adjusted.
<br />Current drain:<65uA.
<br />Detection distance:3--7M(can be adjusted).
<br />Work temperature:-15 to +70 degrees.
<br />Color:show as pictures.
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<br />Package include:
<br />1 x HC-SR501 Human Sensor Module