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This product uses a dedicated high-performance microcomputer chip as the core, which can automatically trigger an alarm bell depending on user settings. Accurate time and easy Widely used in schools, companies and institutions to control the automatic bell. In one day, a maximum of 20 groups can be achieved in single mode and 40 groups in double mode. Powered by 1 x AAA battery (not included), convenient for battery change. One can every single single programprogramprogram it after reading the manual only once.
This product uses a dedicated high-performance microcomputer chip as the core, which can automatically trigger an alarm bell depending on user settings. Accurate time and easy Widely used in schools, companies and institutions to control the automatic bell. In one day, a maximum of 20 groups can be achieved in single mode and 40 groups in double mode. Powered by 1 x AAA battery (not included), convenient for battery change. One can every single single programprogramprogram it after reading the manual only once.
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