S J Security Systems Pvt. Ltd. Manufactures 4-Input 2-Way A/V Auto Switcher. 4-Input 2-Way A/V Auto Switcher features in built in 12V regulated supply for camera, audio IN [for 4 cameras], audio OUT by press to talk switch, in built Mic and speaker with volume control and adjustable switcher timing from 1 to 25 second. S J Security Systems Pvt. Ltd. Offered 4-Input 2-Way A/V Auto Switcher eliminates use of any monitor due to its in built audio video Switcher.
