Camemake CM_LENS_10109 is a 1.81mm F/2.5 fixed-focus M12 board lens for 1/4" sensors, with a 4.7mm image circle. With a 18.71° maximum CRA; TTL 16.89mm. Specified for Security and surveillance, Car Safety, Smart Home. Identify and order this Camemake lens as CM_LENS_10109.