... Controller / Video signal generator / DC12V1A Power Output / Audio Input Test / RS485 CCTV TesterPRO 3.5TFT-LCD Monitor / PTZ Controller / ... Video signal generator / DC12V1A Power Output / Audio Input Test / RS485KS-ST893The KS-ST893 is developed for the On-Site ... video, controlling PTZ, DC12V1A power for camera, Audio input test, generating images, capturing data of RS485 and testing LAN ...