Spesifikasi - With a signal output instruction. - Dual signal output (analog output, and TTL level output) - TTL output - 0~5V analog output voltage, the higher the concentration the higher the voltage. - LPG gas, natural gas, city gas, smoke better sensitivity. - With a long service life and reliable stability - Rapid response and recovery characteristics - concetration: 300-10000ppm - Size: 32mmX2 - Chip: LM393, ZYMQ-2 gas sensors - Working voltage: DC 5V