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3M 955C Book Desensitizer Tattle-Tape - $75 (Upper Kirby / Greater Houston)

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This is used to magnetize and demagnetize the security strips in books.
Application: Sensitising and desensitising of 3M Security Strips
Method of re/desensitizing: Electromagnetic pulse
Sensitising and de-sensitising time: Less than 0.1 seconds
Recommended operating temperature: 10 °C to 35 °C.
Storage temperature: -40 °C to 60 °C
Power supply:
110-120 V alternating voltage 60 Hz
220-240 V alternating voltage 50 Hz
Power consumption:
Max. 140 Watt in stand-by
Max. 280 Watt during operation

Testing
We plugged unit in, but without some kind of indicator we were unsure whether it was powering on. However, when we happened to stick our hand near it (where books would lay) it would click, then click again when our hand moved away. We assume that it must be powering on, and at the least detecting when a suitable object is placed on the front. Beyond this, without suitable media, we were unable to test it any further.
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post id: 6934900344

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