Add-on sensors for our HVAC Smart Relay Switch (HSRS), RF wireless model, 2nd generation. For installations where traditional wire runs are not possible or simply inconvenient. Sold as a set of two (2). Available sensor models are shown below:


  Class 2 (X10 Classic)
RF Range 100 ft.
Battery AAA (x2)
Dimensions 3.25″ x 1.5″ x 0.5″
Wired input
Mounting tape+screws


  • Class 2 – Our X10 “classic” sensor yields an effective wireless range of 100 ft (open air). Requiring two (2) AAA batteries (not included), they are auto-addressable (up to 65,000+ possible IDs) and measure 3.25″ x 1.5″ x 0.5″. Foam mounting tape and screws are supplied. (Class 2 sensors do not store a permanent address and therefore must be initialized and re-registered whenever batteries are replaced.)
  • Notes:
    • We currently offer two available wireless product models: Class 1 and Class 2. The two product variations are not cross-compatible as they operate on different radio frequencies. Therefore, a Class 1 controller will not accept a Class 2 sensor. Nor will a Class 2 controller recognize a Class 1 sensor.
    • The Class 2 X10 classic sensor provides wired contact screw terminals for optional external wired switch (N/C) or closed contact loop. Unless you plan to utilize this input, it must be disabled to avoid inadvertent trigger. To disable, simply apply a short jumper wire across the wiring terminals.
    • RF range values are based on ideal conditions in open space. Actual results will vary for every installation. In general, wireless signals can be diminished or impeded by RF interference, concrete walls, large appliances, etc.



  • Expandable (up to 8 wireless sensors)
  • Compatible with HSRS system (wireless model)
  • Battery-operated
  • Simple mounting



What’s Included:

  • Door/window transmitters (qty 2)
  • Magnets (qty 2)
  • Double-sided foam tape
  • Screws


  • The X10-Classic sensor requires two (2) AAA batteries, not included.


Tech Sheet:

X10 Classic


Additional Info:



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Weight 1 lbs
Door/window sensor

Wireless X10: (all door types), Wireless mini: (wood doors only), Wireless basic: (wood doors only)