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1) Has the function of light reaction and very sensitive2) Inducing distance: 4 - 5m3) Volume: Lo/Hi4) Material: ABS5) Power: 3 x AA5 1.5V batteries6) DC 4.5V-6V external power can also be used7) Can be used as a visitor chime in such places as store, office, and home8) Ring: Dingdong Features: 1) Has the function of light reaction and very sensitive2) Inducing distance: 4 - 5m3) Volume: Lo/Hi4) Material: ABS5) Power: 3 x AA5 1.5V batteries6) DC 4.5V-6V external power can also be used7) Can be used as a visitor chime in such places as store, office, and home8) Ring: Dingdong
