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✔ External antenna for better reading range✔ Stable and accurate card detection✔ Easy UART interface integration✔ Low power consumption✔ Supports LED & buzzer indication✔ Compatible with Arduino and other microcontrollers
The sound sensor module work like that: when the intensity of the sound can not reach set threshold
It is compatible with current communication software and hardware
The clock/calendar provides seconds
Excellent AC Specifications
74HC4051 (Analog Switches) 7407 ✔ External antenna for betterFeatures: Multiplexer Demultiplexer Circuit: 8: 1. Voltage Supply: 2V ~ 6V. Number of Circuits: 1. On State Resistance(Max): 130Ohm. Channel to Channel Matching (Ron): 8. 5Ohm. Voltage Supply, Dual (V): 1V ~ 5V. Current Leakage (IS(off)) (Max): 400nA. Package Case: 16 DIP (0. 300", 7. 62mm). 74HC4051 datasheet.
US$ 74.99
US$ 171.28
US$ 59.99