Name	Manufacturer	Minimum airframe diameter	Barometric Pressure Sensor	Accelerometer	Peak Altitude Only or full flight data recording	Mass	Battery Type	Visual or audio altitude read-out	Computer connections	Outputs
1.	ALTACC	Black Sky Research	38mm (1.5 inches)	MPX4100	ADXL50	Full flight data recording	84 grams (3 oz)	1 x 9 volt PP3	None	PC Palm	2 channels
2.	Cambridge Instruments IAX-96	Emmanuel Avionics	38mm (1.5 inches)			Full flight data recording		2 x 9 volt PP3	Flashing LED	PC	3 channels
3.	Olsen FCP-M2	Olsen	38mm (1.5 inches)			Full flight data recording		1 x 9 volt PP3	Full LCD Panel	PC	2 channels
4.	R-DAS	AED	54mm (2 inches)	MPX4100	ADXL150	Full flight data recording		1 x 9 volt PP3	Flashing LED Beeping tone	PC	2 channels 6 Analogue inputs 6 Digital inputs
5.	G-WHIZ LC	G-Whiz Partners	24mm (1 inch)		ADXL150	Peak altitude only	28 grams (1 oz)	1 x 9 volt PP3	Flashing LED	None	2 channels
6.	G-WHIZ LC Deluxe	G-Whiz Partners	24mm (1 inch)	MPX4100	ADXL150	Peak altitude only	28 grams (1 oz)	1 x 9 volt PP3	Flashing LED	None	3 channels
7.	RRC	Missileworks	38mm (1.5 inch)			Peak altitude only		1 x 9 volt PP3	Flashing LED	None	2 channels