Schluter®-DITRA-HEAT-E-RR is a power module that extends power output when used in conjunction with the DITRA-HEAT-E-WIFI, DITRA-HEAT-E-RT, or DITRA-HEAT-E-R thermostats.
 
Extends power output by 15 Amps in large floor applications
Controlled by DITRA-HEAT-E-WIFI, DITRA-HEAT-E-RT, or DITRA-HEAT-E-R thermostat via low voltage 2 conductor 20 AWG signal wire
Supports 120 V and 240 V cables
Built in Class A GFCI