The following parameters can only be applied to the S3 series. - Resolution up to 1080P@25IPS. - 2.8mm Pinhole optics (95ºx52ºx114º (HxVxD)), F1.6. - 2 simultaneous streams up to 20 users. - 12Vdc power supply (1.2W). - Miniature metal body with pinhole optics. - Abnormality detection: Motion detection, video tampering, scene change, audio detection, network disconnection, IP conflict, illegal access, voltage detection. - Audio input and output. Built-in microphone. M12 mounting type. - Dimensions and weight: 31x31x37.1mm / 0.081Kg.