Spypoint Black Flash Wireless Infrared Booster, IRB-W-B (C): * 100 black infrared LEDs, invisible to the naked eye * 2 levels of infrared power (50 or 100 LEDs) * Triggered by a wireless transmitter (included) * 50" wireless range * Compatible with most infrared cameras * Requires 4 D batteries or 12V power source * Low battery indicator * Kit includes: black LEDs IR-booster, transmitter, installation strap and user manual * Requires 2 AAA batteries for the transmitter