The new CYPRES II Student 1Pin.
It activates the release unit when it detects a rate of descent higher than 29 mph and altitude of approx. 750 feet. 

CYPRESS 2 offers numerous additional features and attributes including:

1. unit is water-resistant for 15 minutes at a depth of 15 feet in fresh and saltwater.

2. power supply of CYPRESS 2 is maintenance-free for the user. There is no need 
    to observe a replacement date, record the number of jumps made, monitor
    the voltage during self-test, watch for a "low bat" sign, purchase a battery, or
    have a rigger open or repack the reserve for this reason.

3. unit serial number accessible from the display anytime you want to see it.

4. maintenance due date accessible from the display anytime you want to see it.

5. reminds you when the maintenance date is near.

6. smaller and lighter.

7. robust rigger friendly case, with rounded corners and edges, and in addition it's
    water-resistant.

8. extended maintenance window:+/- 6 months from month manufacturer, no     

    down-time during the busy part of the year regardless of month of manufacture.

  Technical Data:
  1. Cable length of control unit: approx. 650 mm
  2. Volume: approx. 139 cm³
  3. Weight: approx. 182 grams
  4. Activation altitude: approx.750 feet 
  5. Activation speed: approx. ³ 78 mph 
  6. Length, width, height of the processing unit: approx. 85 x 43 x 32 mm
  7. Length, width, height of the control unit: approx. 65 x 18 x 6,5 mm
  8. Length, diameter of the release unit: approx. 43 x 8 mm
  9. Cable length of the release unit: approx. 500 mm
10. Storage temperature: +71° to -25° Celsius
11. Working temperature: +63° to -20° Celsius *
12. Maximum allowable humidity: up to 99,9 % rel. humidity
13. Altitude adjustment limits: ±1500 feet 
14. Operating range below above sea level: -1500 feet to+26,000 feet 
15. Functioning period: 14 hours from switch-on

The handling:

The handling of CYPRES 2 is simple:

After you have purchased it, your rigger slides it into the factory integrated CYPRES set up and you forget about it for four years. Then you have the maintenace done and forget about it for another four years.

How Cypres works:

Every time CYPRES is switched on, it measures the air pressure several times in a short period of time, takes the average value for ground level, thus "zeroing" itself.

This happens during the integrated self-test. While it is in use, CYPRES constantly checks the air pressure while on the ground and , if necessary, adjust to chaging weather conditions, e. g. air pressure. Even though you might need to reset your altimeter before a jump, CYPRES takes care of itself. This very accurate calibration is the basis for CYPRES to recognize exactly the activation altitude and speed.

The processing unit contains a factory-programmed microprocessor that is capable of real time calculations of the jumper's altitude and rate of descent based on barometric pressure. By monitoring this data, certain criteria are drawn. Should the conclusions be that the jumper is in a dangerous situation ( i. e. still in freefall at a low altitude) the processing unit triggers the release unit to open the reserve container.