select * from data where sn='max0' order by id desc limit 4
idsntspqvaluesystemts
4696059 max0 curr 3.387 1501373182 Sun 30 07 2017 02:06:22
4696058 max0 volt 14.648 1501373182 Sun 30 07 2017 02:06:22
4696057 max0 rawa 393 1501373182 Sun 30 07 2017 02:06:22
4696056 max0 rawv 600 1501373182 Sun 30 07 2017 02:06:22

Sun Jul 21 04:32:40 2019 by walley