Gs828h2 is a standalone logger integrated with gprs gsm module and "temperature & humidity sensors".

it uploads the logged data on schedule automatically, alarm triggered or on request manually.
upload interval and data logging interval are user programmable from 30s to 24 hours.

[overview]
a) 1 x indoor temperature, 1 x submersible temperature
b) 1 x humidity sensors
c) data capturing & logging
d) real time gprs and sms data upload
e) logged historical data upload
f) multiple i/o [digital input, analog input, pulse input, digita