Features:
*Can supply power to network surveillance cameras that with PoE function;
*10x 10/100/1000Mbps auto-sensing RJ45 ports, 8x 10/100/1000MbpsPoE ports, 2x uplink port;
*Supports port auto-flip (Auto MDI/ MDIX);
*Maximum power of single PoE port: 15.4W;
*Adopts store-and-forward architecture;
*IEEE 802.3af power on up to 8 ports;
*Features with fanless, natural cooling, small, compact and quiet design, suitable for desktop or wall;
Features:
This is used by attaching between camera body and lens of the 35mm single-lens reflex camera. Compatible for Canon all EF and EF-S lenses.
It comes as a set of 3 tubes with different lengths (13mm, 21mm, 31mm) which singly or in combination makes it usable in 7 different lengths.
It couples perfectly with the camera's automatic diaphragm.
With camera of TTL, AE (Through-the-Lens, Automatic Exposure) type, it gives perfect coupling except when combined with electronic flash AE unit.
Upgraded circuitry and gold-plated electronic contacts to greatly improve signal sensitivity for working better with DSLR cameras and compatible lenses
Superior lock pin which can tighten the tube joint.
Exceptionally useful for macro photography, enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality.
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