Oscillator does not distinguish between positive and negative poles. Circuit board and shock head (ceramic chip transducer) wiring instructions for use the circuit board shall not be no-load energized;.
eBay
Test mode :Using IO trigger for high level signal.( Not less that 10us),The Module sends eight 40 kHz automatically and detect whether there is a pulse signal back. The detection zone: 0.78~196 in/ (2cm~500cm); High precision: up to 0.12 in/(0.3 cm) Effectual angle: less than 15° Power supply: 5V DC; Quiescent current: less than 2mA. Test distance = ((Duration of high level)*(Sonic :340m/s))/2 Package included: 8pcs HC-SR04+ 4pcs Mounting Bracket(support HC-SR04 only) Power Supply :+5V DC Quiescent Current : 3mA Working Current: < 5mA Effectual Angle: <15° Ranging Distance : 2cm - 450 cm Resolution : 0.3 cm Measuring Angle: 30 degree Note: The module should be inserted Fortunately, the circuit board re-energized, and avoid the high malfunction, if they have re-energized before they solve.
eBay
eBay
40KHZ 2 Pair ULTRASONIC TRANSDUCERS, ALARMS / ROBOTICS, TX & RX..Great for projects. Condition is "New". Dispatched with Royal Mail 2nd Class.
eBay
Dual TransducersGeneral ultrasonic cleaner has only one transducer, PELCAS ultrasonic cleaner has two transducers. Two transducers not only make the ultrasonic waves generated more uniform, but also double the cleaning ability.
eBay
Using IO port TRIG trigger location, to the high level signal of at least 10us;. Easy to use. Long service life. This item have 3 months warranty. Echo (the receiver) TX.
eBay
What is this?This ultrasonic module is a high-precision sensor that uses ultrasonic technology to measure distance. It is used for object detection and distance measurement. It is widely used in security equipment, distance measurement, anti-theft and other field. Its accuracy and stability have important application value in the field of industry and scientific research.What will I get?The Distance Sensor, we provide here, is in size of:Model: TCT40-16R/TNumber of Pins:2In the package of: 20 x Distance Measuring TransducerAre there any advantages of the product?The ultrasonic sensor has stable performance and can withstand environmental tests such as high and low temperature, vibration, and humidity.High-precision sensor technology ensures accurate and reliable distance measurement for various projects.
eBay
US Ultra sonic Transducer Fetal Ultrasound Probe / Waterproof IPX8. Condition is Used. Dispatched with Evri Tracked.
eBay