Lens Material - Made of germanium optical glass , providing a clear image. | Compatible with any filters that are 55mm in diameter | Infrared filters are designed to allow IR mid-infrared wavelengths while block visible light | Uses for photography with infrared films; Infrared film is also sensitive to ultraviolet rays and the shorter wavelengths of the visible spectrum | 590nm, 600nm and 630nm for Infrared change machine. The rich colors, custom white balance, the original film in general the sky was bright red, partial brown or amber, plant leaves, blue, sky blue saturation after post-processing, the leaves yellow or golden yellow.
Top-loading, programmable MP3/CD player | Compatible with MP3, CD, CD-R, and CD-RW formats | LCD display | Built-in USB input allows user to play various media devices | Built-in FM radio
Programmable access code | Normally open or normally closed relay | Selectable relay closure times | Selectable ring delay (1, 2, 6, or 15) | Easy installation with modular jacks and screw terminals