I don't know if mine was broken or this modules don't work. I've tried powering it from 9V and 12V DC and the range was about 20cm. I replaced the resistance to increase the distance from originally 2 Mohms to 10Mohms - the range increased to about 1m. Useless. In the description says it can be powered from maximum 40 volts. I've tried 24 and smoke came out and now is totally broken. I recommend the RCWL-0516 module.
Verified purchase: Yes | Condition: New
The documentation little is only in chinese
Verified purchase: Yes | Condition: New
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