Gravity: URM09 Ultrasonic Distance Sensor (2～500cm, Trig) Shipping:2-4 Weeks You can chain as many

You can chain as many as you'd like although after 5 or more shields you may run low on RAM if you're using an UNO

it means you can connect this device to any DCE (Data Communication Equipment) such as Modems or any DCE device equipped with a female DB9 connector

* Antenna Length: 112

The HR-MaxTemp sensor when connected to the HR-MaxSonar line of sensors allows for automatic temperature compensation of speed of sound changes over temperature

Gravity: URM09 Ultrasonic Distance Sensor (2～500cm, Trig) Shipping:2-4 Weeks You can chain as manyThis is a non contact ultrasonic ranging sensor of high performance from URM09 series, employing standard PH2. 0 3P Gravity vertical interface. It provides an accuracy of 1% within an effective measuring range of 2~500cm(test on a flat wall). Similar to SR04 ultrasonic ranging modules in principle and using method, the ranging function of this sensor is triggered by high low level output from the I O ports of a host, and then the sensor converts