Summary: This part is - especially for the price - very ok.
Aaaber:
Some of which are delivered lethal:
http://www.eevblog.com/forum/chat/deadly-wiring-fault-atten-858d-hot-air-rework-station/
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I just received at Atten 858D + Hot Air Rework Station Direct From China. When I plugged it in and switched on it what Completely dead - no display or any activity. On taking the front panel off I found did the power input socket had been mis-wired mains active and what tied directly to the exposed metallic parts of the heat gun.
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In short: As tempting as the offer for the price - I would take care not to relate anything from the manufacturer ... Better a few more have at another manufacturer and not worry about their own lives.