We are Shenzhen Bestech Electronics Co., Ltd based in Shenzhen , China. We are member of Tradekey.com since December, 2011. Our business is related to Security & Protection industry and we specifically deal in IR Speed Dome Camera. Please find our product details below: Variable IR High Speed Dome Camera * PWM function, intelligent IR illumination & power consumption is variable, dependant the zoom factor; * IR distance 120M; Multiple languages for OSD menu, English, Spanish etc.; Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.