How to install the rear projection screen

The screens are installed differently and the screen requirements are different. Telescopic screens are required to be soft materials. The fixed installation has a soft screen and also has a hard screen. The height of the screen is different from the ground installation, and the vertical viewing angle of the screen is also required. The soft rear projection screen and the diffuse reflection screen have a large vertical angle of view. Fresnel optical screens have a vertical viewing angle of only 8-12 degrees, so please pay attention when installing. The vertical tilt angle of a hard screen is generally less than 15 degrees. The screens are installed differently and the screen requirements are different. Telescopic screens are required to be soft materials. The fixed installation has a soft screen and also has a hard screen. The height of the screen is different from the ground installation, and the vertical viewing angle of the screen is also required. The soft rear projection screen and the diffuse reflection screen have a large vertical angle of view. Fresnel optical screens have a vertical viewing angle of only 8-12 degrees, so please pay attention when installing. The vertical tilt angle of a hard screen is generally less than 15 degrees. The screens are installed differently and the screen requirements are different. Telescopic screens are required to be soft materials. The fixed installation has a soft screen and also has a hard screen. The height of the screen is different from the ground installation, and the vertical viewing angle of the screen is also required. The soft rear projection screen and the diffuse reflection screen have a large vertical angle of view. Fresnel optical screens have a vertical viewing angle of only 8-12 degrees, so please pay attention when installing. The vertical tilt angle of a hard screen is generally less than 15 degrees.

Ceiling Mount Antenna frequency : 824-960/1710-2500MHz , Support Frequency Range of GSM/CDMA/PCS/3G/WLAN/4GLTE System Device
N-female connector (50 ohm)

Can get 3dBi gain

This  Ceiling Mount Antenna can work for 2G/3G/4G cell phone booster

Increases Your Wireless Coverage by up to 300%

Indoor Omnidirectional Coverage the Whole Floor

Easy Installation with Ceiling Mounting, 1 X N Female Connector to Signal Booster

PERFORMANCE GUARANTEED: Manufacturer 2-year warranty and 30-day money-back guarantee

NOTE: This is a passive antenna, I can not work alone. It must work together with other active network device like signal booster/repeater/router/access point

Ceiling Antenna

Ceiling Antenna,Ceiling Mount Antenna,Omni Ceiling Antenna,Signal Coverage Antenna

YETNORSON ANTENNA CO.,LIMITED , http://www.yetnorson.com