S J Security Systems Pvt. Ltd. Manufactures Single Box Remote Switchers. Single Box Remote Switchers features on-panel display of camera number and count-down of dwell time. These are easy to operate remote controlled switchers with different dwell time for each camera. The maximum time duration between two cameras is up to 95 seconds. S J Security Systems Pvt. Ltd. Offered Single Box Remote Switchers is easy to operate handset with good range of IR for big room. Single Box Remote Switchers are available in different models.