One of the smallest recording altimeters

Tiny: 0.365" x 0.485" (9.3 x 12.3mm)

Only weighs 0.6g (without battery)

Fits into 10.5mm tubes

Bright red LED

3-pin connector for bidirectional communication
or telemetry

Firmware is field upgradeable by user

Can be used in model rockets, weather
balloons, kites, model airplanes, etc.

Measures up to 100,000 ft. (30.5km) MSL

Resolution is 8" (20cm) at sea level

Very low power: 150µA (average) @ 3V
(depends on sample rate)

Supply voltage: 2.2V - 3.6V (3.0V recommended)

Suggested power source: CR1025 or CR927
coin cell (battery holder not included)

Records air pressure and temperature

Data compression to increase recording
capacity (typically 2500 samples)

User selectable startup delay, launch detect
altitude, sample rate, etc.

Recorded data is non-volatile, and only erased
when explicitly requested (not from accidental
loss of power due to intermittent connection)

Contest directors will appreciate the tamper-
resistant downloaded data file that includes
byte-for-byte verification of the firmware version

Includes host software for MS Windows; version
for Android planned for future

Conformal coating for protection

4-layer PCB for better EMI immunity

Requires USB-HalfWire communication module
(available separately) to erase, arm, download,
update, etc.