220V 5A Automatic Factory School Bell Timing Switch Controller 40 Groups Timer Time Switch Relay

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220V 5A Automatic Factory School Bell Timing Switch Controller 40 Groups Timer Time Switch Relay

220V 5A Automatic Factory School Bell Timing Switch Controller 40 Groups Timer Time Switch Relay DescriptionSpecification:Internal powerºBuilt-in battery, no need to replaceWorking modeºManual, Automatic switchProgrammable numberº40Ring time adjustmentº1 second -99 secondsTime control rangeº1min-168hTiming errorº≤1 second/dayOutput modeºA set of transformationsContact capacityºUe/Le: ac-15 220V/3ALth:16AElectrical lifeº100,000 timesMechanical lifeº300,000 timesAmbient temperatureº-10 ° C to 45 ° CPowerº≤2WInstallationºDevice type, Guide rail typeScope of application:–NKG-4 time control bell ringing instrument is mainly used for ac 50Hz, rated control power supply voltage to 220V and below as a time control element in the circuit, according to the predetermined procedure to open or tear the circuit used. For example: automatic control of school bell timePackage Included:1 x Timing control switch

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