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+[appendix]
+== Handling Precautions
+
+       All Altus Metrum products are sophisticated electronic devices.
+       When handled gently and properly installed in an air-frame, they
+       will deliver impressive results.  However, as with all electronic
+       devices, there are some precautions you must take.
+
+       The Lithium Polymer rechargeable batteries have an
+       extraordinary power density.  This is great because we can fly with
+       much less battery mass than if we used alkaline batteries or previous
+       generation rechargeable batteries... but if they are punctured
+       or their leads are allowed to short, they can and will release their
+       energy very rapidly!
+       Thus we recommend that you take some care when handling our batteries
+       and consider giving them some extra protection in your air-frame.  We
+       often wrap them in suitable scraps of closed-cell packing foam before
+       strapping them down, for example.
+
+       The barometric sensors used on all of our flight computers are
+       sensitive to sunlight.  In normal mounting situations, the baro sensor
+       and all of the other surface mount components
+       are “down” towards whatever the underlying mounting surface is, so
+       this is not normally a problem.  Please consider this when designing an
+       installation in an air-frame with a see-through plastic payload bay.  It
+       is particularly important to
+       consider this with TeleMini v1.0, both because the baro sensor is on the
+       “top” of the board, and because many model rockets with payload bays
+       use clear plastic for the payload bay!  Replacing these with an opaque
+       cardboard tube, painting them, or wrapping them with a layer of masking
+       tape are all reasonable approaches to keep the sensor out of direct
+       sunlight.
+
+       The barometric sensor sampling port must be able to “breathe”,
+       both by not being covered by foam or tape or other materials that might
+       directly block the hole on the top of the sensor, and also by having a
+       suitable static vent to outside air.
+
+       As with all other rocketry electronics, Altus Metrum altimeters must
+       be protected from exposure to corrosive motor exhaust and ejection
+       charge gasses.
+