3 ms·
I have a CO sensor for an arduino that I haven't used yet that cost a few dollars. I haven't noticed in the manual any mention of expiration.
by jjeaff 3y ago
I have a CO sensor for an arduino that I haven't used yet that cost a few dollars. I haven't noticed in the manual any mention of expiration.
- p1mrx 3y agohttps://www.dfrobot.com/product-686.html https://www.dfrobot.com/product-686.html > MQ7 datasheet > "Its service life can reach 5 years under using condition."