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The AJ-SR04M is a waterproof ultrasonic sensor, with the same functionality and operation as the HC-SR04. This sensor has the transmitter and receiver in the same packaging and also has built-in anti-jamming (interference suppression). Version 2.0
QHermanCan it be used in the same way with the TX and RX pin connected as the hc04 canAnswer this question
QEric DirixDoes the board also work on 3V?ViewHide 1 answer | Answer this question
AOpencircuitThe board works on 3.3V to 5V.
QWouter MetsWhat is the blanking distance or the minimum measuring range? Is this sensor suitable for measuring fuel level from the top of the tank?ViewHide 1 answer | Answer this question
Aaquaponics.ioI have this sensor too, and I am now on the site to order a few more. For me the minimum measuring range is approximately 21-22 cm, if I go closer then the output is very random or I get an out of range message. So I think the minimum measuring range is around 21 cm. Good luck!