This pin is pulled HIGH with the onboard resistor
The initial cost of the NB-IoT modules is expected to be comparable to GSM/GPRS
Impedance (Ω): 50Ω impedance ensures stable performance with a wide range of wireless modules and IOT devices
DC MOTOR click communicates with the target board via SELECT1
such as remote control for Netflix
DFRobot Gravity: Analog Adjustable Infrared Proximity Sensor Cables & Connectors This pin is pulled HIGHAnalog Adjustable Infrared Proximity Sensor This is an Analog infrared distance sensor. It has an adjustable detection range, 3cm 80cm. It is small, easy to use, assemble, and inexpensive. Useful for robotics, interactive media, industrial assembly line, etc. Infrared wave length is part of the Sun's natural light spectrum. While is a nice fit for indoor projects, outdoors with plenty of sunlight and reflective surfaces on it's sight is not adviced.