This is the best Accelerometer in it's class.
It's been used in rockets for recovery for well over a decade.
In flights over 100,000 feet and over MACH 4!!!!
It also is the fastest recording at 500 samples per second!

Designed around the K.I.S.S. principle to reduce user induced failure modes.

This altimeter has two outputs, one for Apogee and one for Main (low altitude).
It uses acceleration to detect apogee and a barometric altimeter to determine the Main deployment point.

It records acceleration and pressure at a user defined rate up to 500 samples per second.
The user also configures the pre-launch buffer size up to 2000 samples!!

It also has peak reporting to give you the height of the last flight.

All powered by a single 9V battery.