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It brings together the parties' knowledge in open hardware and industry leading reference designs for IoT devices to create this powerful development board
Input Voltage: 100V-240V 50/60Hz 500MA MAX
the time duration of the high level is ultrasonic from launch to return
which has a corresponding port on the Sensor Shield
Operating Current: less than 20mA
MG811 Carbon Dioxide CO2 Gas Sensor Analog Output 0-2V Loudspeaker It brings together the parties'Carbon dioxide sensor module (with analog signal output, TTL level signals, temperature compensated output) One size: 322230mm L * W * H Main chip: , carbon dioxide gas sensing probe Working voltage: DC 6V Features: 1, having a signal output instruction; 2, dual signal output (analog output, and TTL level output); 3, TTL output valid signal is low. (Low level signal when the output light can be directly connected to the microcontroller) 4, analog
