DN/ST - Total Energy Probe - for ST1 mounting adapters - Most Popular
This "V" style TE Probe is the latest and highest performance TE probe available. It offers very good Total Energy compensation. It is exceptionally good at accommodating horizontal air movement caused by horizontal gusts or yawing of the aircraft. This version is compatible with ST1 mounting adapters - which have been built into many sailplanes.

Video
Here's a nice sailplane high-speed / low-altitude pass video which clearly shows a correctly mounted DN TE probe.
http://www.youtube.com/watch?v=N1sta1GMQxM

Specifications
Type: Total Energy
Number of Functions/Ports: 1
Materials:

Tube: Carbon fiber or black anodized aluminum (same price - carbon fiber recommended and in stock)
Head: Nickel plated brass
Tail: anodized aluminum

Overall Length: 760 mm (29.9 inches)
Protruding Length: 720 mm (28.3 inches)
Weight: 44 grams (1.55 ounces)

Mounting Tip
The probe should be mounted so the 2 tips are oriented horizontally - parallel to the wings.

Compatibility:

Works with ST1 mounting adapters
Does not work with ST2, UN, or SUN mounting adapters

Material Options

Carbon Fiber (standard, in stock, Recommended), Order esa-DN-ST-Carbon-...
Black anodized aluminum, Order esa-DN-ST-AL-...

Port Options

Diameter: 8 mm, Engagement Length: 30mm (required for Schempp-Hirth sailplanes built after 1998) - Most Popular
Diameter: 8 mm, Engagement Length: 40mm
Diameter: 6 mm, Engagement Length: 35 mm (common on LS sailplanes)