Voice Module Alarm Sound Dingdong Doorbell Music






Berikut sepesifikasi bell ding dong tersebut :

1. working voltage:3-4.5V
2. speaker:0.25W-2W 8ohm

Push botton once, play doorbell 3 times,about 3 seconds

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Dual Volt Amp Meter Digital Ampere Meter Voltmeter 10A 0-100V Ammeter

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Descriptions: Require 4.5-30V DC working voltage. The maximum input voltage can not exceed 30V, otherwise there is the danger of burning. Specifications: Working voltage: 4.5-30V DC Note: The maximum input voltage can not exceed 30V, otherwise there is the danger of burning Working current:20mA Display: 0.28 inch Two color blue and red Measuring range: DC 0-100V 0-10A Minimum resolution (V): 0.1V Refresh rate: 100mS / times Measure accuracy: 1% ( 1 digit) Minimum resolution (A): 0.01A Operating temperature: -15 to 70 c Working pressure: 80 to 106 kPa Size: 47 x 28 x16 mm/1.85 x 1.10 x 0.63 inch Color: black Package Included: 1 x Voltmeter Ammeter 2 x Cable
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