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                    ... frequency. Security level:100 security levels. Counter: Record the pass and alarm numbers. Self diagnostic, it will inform the user when exit the system. Start-stop technology:infrared devices with automati...
 
                    ... ★ Alarm settings: 1. Alarm sound time setting (1-9S) 2. Alarm LED time setting (1-9S) 3. Alarm volume setting (level 0-20) "20 levels of continuous sound adjustment, the sound segment is obvious, when it is...
 
                    ... ★ Alarm settings: 1. Alarm sound time setting (1-9S) 2. Alarm LED time setting (1-9S) 3. Alarm volume setting (level 0-20) "20 levels of continuous sound adjustment, the sound segment is obvious, when it is...