This is the DISH Pro separator typical used to run DISH Network dual tuner over one cable run using DISH PRO PLUS technology.
Use of this switch requires a Dish Pro LNBF at the dish in order to function properly.

Provides signal to a DISH Network Dual-Tuner receiver, such as the 322, 622, etc. over just one cable run to that receiver.
Can be used with a "diplexer" to send the programming back out over the same cable to another television (room) also!

This is a "re-manufactured" part, which means that it has been "used" at one point, but returned to dish and repaired or replaced and checked for function accordingly.
We offer a 30-day warranty on all of our "re-manufactured" DISH Network parts.   The "new" part number for this product is DN158, however that item has been "out of stock" for some time now.

Dish Network Part # 148534 148537

This separator makes dual tuner installations a sinch by providing a satellite signal from one dish over one cable to supply both sides of the DISH Network dual tuner.  This new "plus" technology even allows you to send the picture and audio back out over that same coaxial cable to yet another room or television or for home distribution, etc. with the use of two optional "diplexers!"