Hoya 49mm UV and IR Cut Filter Brother LB3663 The Audience Signal Light can

The Audience Signal Light can be powered from the Limitimer from up to 200 ft away or independently powered (recommended) with the included power supply

You can build a circuit with nothing but a coin battery

Embedded algorithms for run-time bias and compass calibration

With 10KB Jumbo frame

1 lb and comes in a silver finish

Hoya 49mm UV and IR Cut Filter Brother LB3663 The Audience Signal Light canCuts Out UV Rays Below 390 nm Cuts Out IR Rays Above 700 mn Retains Visible Light Spectrum Reduce Effects of Atmospheric Haze Clearer and Sharper Pictures Outdoors The 49 mm UV and IR Cut Filter from Hoya is a lens filter that, when attached to your lens, permits only the visible spectrum of light rays to enter the camera and get captured by the sensor. It blocks out both the higher frequency ultraviolet rays, and lower frequency infrared light rays.