Time Control Switch Guide Rail Type School Factory Ring Bell Switch Relay AC220V 3A

1、The timer switch can be used for school bell or factory bell. 2、Guide rail mounting design is convenient for installation. 3、The bell ringing time can be set from 1s to 99s. 4、Low error,only 1s/day error in working,and the minimum setting time is 1min. 5、With a built-in button cell ML621 which dose not require replacement. <div class="wang-edit-text">Item Type:Timer SwitchMinimum Setting Time: 1minWorking Voltage: 220V 50/60HzTiming Error: ≤1s/DRated Operating Current: AC-15 220V 3AThermally Stable Current Value: 16ARinging Time: 1s~99sInstallation Method: Rail TypeBuilt-In Battery: Rechargeable Button Battery ML621, No Need to Replace<style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Timer Switch1 x English Users Manual