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Used for: 6–12 months
Chosen because the ceiling in this room is 4 metres up and nobody fancied a scaffold tower every time a lamp gave out. Wall mounted, laser, no maintenance, and that decision has paid for itself already.
Used for: More than a year
The vents want a vacuum once a term or the dust builds
Still on the same wall arm, still square, still bright, and it has cost nothing to run beyond the electricity. The only job it has asked for is keeping the dust out of it.
Used for: Less than a month
Instant on and instant off, which suits a school day
The wall bracket takes some working out
First impressions from an install this week. The bracket instructions are a fold out sheet of diagrams that assume you already know what you are doing, and the arm has more adjustment points than seems reasonable until you start using them, at which point you are grateful for all of them. Once up, it is exactly what was wanted. No warm up and no cool down, so it goes off between lessons instead of being left running all day for convenience, which was the argument for buying laser in the first place. The image is clean into all four corners on a proper board, and at 90 inches the back of the room reads normal sized text without anybody squinting.
Used for: Less than a month
Ultra short throw without the usual softness at the edges
The worry with these is that the corners go soft and text at the far edge turns to mush, which was certainly true of the last ultra short throw unit we had. Not here. A test pattern is sharp across the whole width, and small text in the far corner is as readable as it is in the middle of the board. The other pleasant surprise was setup. The geometry tools have enough range in them that a slightly out of square bracket was not the disaster it might have been.
Used for: More than a year
Runs all day, every day, without a murmur
The onboard sound cannot fill a classroom
Two of us specify these now for every room we refit, which is about the strongest recommendation I can give anything. Audio goes out to the ceiling system in any case.
Used for: More than a year
The grey body shows dust more than a white one would
Two of these went in at the same time and both have run daily since without a single fault between them. The image reaches the corners of a wide board cleanly, and nobody has needed the lights off to read anything on it.
Used for: 1–3 months
No dazzle for whoever is presenting
The grey finish marks easily
Standing under it and talking to a room is finally comfortable: no beam in the eyes, and no shadow on the board behind you!
Used for: Less than a month
Fits above a board where nothing else would
Needs a mains socket right beside the arm
Went in where a long throw unit could not, because the room is short and the ceiling is low. Do check where your nearest socket is before the arm goes up.
Used for: 1–3 months
Bright, even, and no shadow for whoever is presenting
Alignment against a board is fiddly and unforgiving
Replaced a ceiling mounted lamp projector that had been slowly going yellow, and the difference in the room is bigger than I expected: white is white again, and the light comes from above the board rather than from behind the class. Alignment is the part to budget time for. The mirror geometry means a millimetre at the mount is a centimetre at the far corner, and the corner adjustments all interact with one another, so it is small nudges and a great deal of walking backwards and forwards. Two of us spent an entire afternoon on the first one and 40 minutes on the second. Seven weeks in there has been nothing else to report. It is quiet, it starts instantly, and the picture has not moved.
Used for: 1–3 months
The old unit hung in the middle of the room and every child who walked up to the board threw a shadow across it. This one sits above the board and that problem simply vanished. Brightness with the strip lights on is more than enough, and nothing about it is loud.