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It's a 433Mhz DC 12V 24V Universal Wireless Remote Control Switch Mini Size RF Relay Receiver 433
It's a Potentiometer Knob Black and White
It operates on 3-12V DC
Reset (RST/NRST)
5mm Number of Pins 10
MQ-8 Hydrogen Gas Sensor HEPERFAST SOFT RECOVERY DIODE It's a 433Mhz DC 12VThis MQ 8 gas sensor employs a gas sensitive material with a lower conductivity than Tin oxide (SnO2). Use a simple circuit to convert changes in conductivity into an output signal that corresponds to the gas concentration. This sensor can detect a wide range of hydrogen gases. This MQ 8 can detect hydrogen gas concentrations anywhere from 100 10000ppm. Features High Sensitivity Fast Response Time Specification Model MQ 8 Type Gas Sensor No. of Pin 06
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