| Quantity | 3+ units | 10+ units | 30+ units | 50+ units | More |
|---|---|---|---|---|---|
| Price /Unit | $18.08 | $17.71 | $17.16 | $16.42 | Contact US |
TS-6210-W White Wireless Digital Thermo-hygrometer with 4.72-inch Screen Real-time Temperature and Humidity Detector
$27.56
TS-6210-B Black Wireless Digital Thermo-hygrometer with 4.72-inch Screen Real-time Temperature and Humidity Detector
$27.56
DXL180 Digital Angle Gauge Support Angle/Slope/Inches/MM/M Reading 0.05° Resolution 128x64 LCD Screen
$30.06
51 SCM HC-SR04 Ultrasonic Range Finder Digital Tube Vehicle Collision Avoidance System Board
Description:
51 SCM + HC-SR04 ultrasonic sensor+ digital tube display+key+buzzer
Specification:
- SCM: STC89C52
- Can set slsrm distance
- Buzzer will alarm when the actual distance less than the setting distance
- Measuring range: 2-5cm
- Power: USB
Working principle of the module:
- IO trigger to measure range, high level signal for at least 10 us;
- Module automatically sent eight 40 KHZ square waves, automatically detect whether there is a signal
Return;
- Have returned signal, through the IO output high level,the duration of the high level is the time the ultrasonic wave is emitted from the return.
Package List:
- 1 x Ultrasonic Range Finder board
