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For connect battery
Maximum input current: 1
1 X 4-digit display tube
Onboard ESP8266-12 standard pitch leads to a stable industrial grade WiFi module all interfaces
It can withstand high current overload
MQ8 Hydrogen Gas Sensor import_2020_05_05_104203 For connect batteryThis sensor module has an MQ 8 as the sensor component and has a protection resistor and an adjustable resistor on board. A sensitive material MQ 8 Module H2 Alarm Detection use in clean air low conductivity tin oxide (SnO2). Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. MQ 8 hydrogen gas sensor of high sensitivity, the monitoring of the other hydrogen containing gas is also
