Cablematic SimPal-T4 User Manual page 36

 There are warming mode and cooling mode for thermostat control function. In warming
mode, socket will auto turn on when temperature lower than smaller temperature value,
and turn off when higher than bigger temperature value; Cooling mode, socket will auto
turn on when temperature higher than bigger temperature value and turn off when
temperature lower than smaller value.

The Master sends following SMS message in order to:
Activate Thermostat control: #23#0#1#
SimPal-T4 POWER SOCKET USER MANUAL
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