SS3 Deep Backplate
Backplate Extender

The SS3 Deep Backplate is an accessory for SMART-Sensor™ and SPACE-Sensor™ Temperature devices that facilitates surface mounting without the need to cut an opening in the wall. The SS3 Deep Backplate is ideal for gas-sensing models and for installations on concrete or other solid surfaces. Designed to fit and cover single-device electrical boxes.

Purchase Products

Product features


  • Matches SMART-Sensor (SS3) and SPACE-Sensor Temperature (SST3) devices.
  • Easily installed on concrete and other surfaces that do not permit you to drill or cut a hole.
  • Closed-cell foam gasket included to seal the wall opening.
  • Fits and covers single-device electrical boxes.
  • Facilitates protected surface mount wiring for gas-sensing SMART-Sensor and SPACE-Sensor Temperature devices.


  • UL 94HB Flame class rating (3).
  • White or warm gray.


  • Optional conduit coupler.

Technical specifications

Optional Conduit Coupler

  • For wiring enclosed in 1/2" metal electrical tubing.


  • 12.02 cm L x 7.23 cm W x 2.1 cm H
    (4 3/4" L x 2 13/16" W x 0.83" H).


  • Deep backplate: 45 g (0.10 lb).
  • Conduit coupler: 5.2 g (0.01 lb).