£55? b grade? to much for that , you can get similiar for £30 from ebay with psu and cable.
Hence go for the ones marked upto 50 to 100m in the dark cost you about £90 but they are powerful and light up evertything.
Of course you could go for cheap internal domes there IR is excellent, and they work outdoors if you know how to seal them!!! got 4 for £115, they light up outside better than than some of the weatherproof ones.
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