SMART Remote Sensor Module

The EB-RSM is pre-configured to support these sensors: 

Honeywell  .....................    C7189U indoor sensor,

                                            C7089U outdoor sensor

Tekmar  .........................     D076 indoor sensor,

                                            D079 slab sensor,

                                            D084 flush mount sensor

Johnson Controls  .........     HT-6703 humidity sensor,

                                            CD-W00 CO2 sensor

Note: Other temperature sensors can be supported by just entering the B value or the resistance reported by the sensor at  70°F (21°C) during the configuration process.


The inputs of the RSM can be configured to support different types of technologies. Refer to the following table for the various options.

Sensor Position                                          R1         R2         R3        R4

Dry Contact:                                               Yes        Yes       Yes      Yes

Temperature - Resistive ( 10KΩ NTC):     Yes        Yes       Yes      Yes

Humidity or CO2 (0-5 or 0-10VDC):           No          No        Yes      Yes

The ecobee remote sensor module enables the user to connect up to 4 remote sensors to your ecobee SMART or ecobee EMS system. Sensors supported are temperature sensors (10K ohm, NTC, Type 2), humidity sensors (0-5 or 0-10VDC) & CO2 (0-5 or 0-10VDC) - EMS only.

The ecobee SMART or ecobee EMS system must be using software version 2.1 or later to support the EB-RSM module. If you are not running this version, please contact ecobee support to have your thermostat upgraded. To verify the version you are running: From the Home screen, press More > Settings > About > Version



Operating Temp: -40 to 160F (-40C to 70C)

Operating Humidity: 5-95% R.H non-condensing

The Remote Sensor Module is mounted within the Equipment Interface enclosure. 

To begin, remove the front cover of the Equipment Interface. If necessary, insert a flat-head screwdriver into one of the slots as shown below, and gently twist the screwdriver.



Refer to fig. 1 for positioning.




To access the wiring channels for the Sensor Module simply remove the screws to release the plastic covers affixed to the front panel of the Equipment Interface. Refer to fig. 2.






All programming of the EB-RSM is done through the touch screen interface of the ecobee Smart or ecobee EMS thermostats. The sensors can be configured through the sensors menu item in the Installation Settings.

To configure the sensor settings: From the Home screen select More > Settings > Installation Settings > Sensors.

Refer to the SMART or EMS installation manual for more details.


Wiring Diagram

Wiring Specifications, refer to this table to determine maximum wire lengths allowed:

Equipment Interface to Sensor Module >    18 AWG:  1000ft/380m

Sensor Module to Sensors >     18 AWG:   250ft/39m

Jumper Settings

 For proper operation, all 4 switches on SW1 should be in the OFF or down position as indicated in the drawing to the right.




Once the sensors have been configured they can be monitored from the sensors icon in the More screen.

 To monitor sensors:

 From the Home screen, press More > Sensors       

If a sensor is configured as a control sensor, you will be able to select which sensors will be used as the set temperature. If more than one is chosen the Thermostat will take the average of those sensors. The same logic applies for indoor humidity sensors.

The Remote Sensor Module has two LEDs to display the status of the system. If you’ve wired the system correctly, only the Power LED should be on.



  LED ON: Green indicates the module has power and is operational.



  LED ON: Red indicates the module is not communicating to the thermostat.


A flashing on/off red LED indicates the supply voltage is too low to the Module.



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