DX » Community » Reviews » PIR Motion Activated White LED Night Light (4*AA)
5.0
  • 5 star 19 ( 90% )
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  • Not very bright, but you can upgrade it!

    posted by viamer on 05/05/2011
    0

    Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month

    Pros:

    Motion detection works perfectly. Real passive pyroelectric infrared detector inside! Low power consumption. Will not switch on when it is light, there is additional light sensor.

    Cons:

    20 mA LED is not enough for my purposes.

    I heard that PIR detectors loose their sensitivity after several years.

    OtherThoughts:

    I removed original LED and installed... Cree XMLAWT T6 (SKU 51989) instead! I had to use huge heatsink, 2.4A regulator (SKU 20330) and additional 2805 8A switching MOSFET (desoldered from SKU 26112).

    Now it sinks more than 1,5 A from 4 batteries and lights bright as hell.

    Bottomline:

    Don't know how long it will work with 4 AA alkaline batteries after my upgrade. Its a pity that i can't install 18650 Li-Ion batteries in this small box!

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