Add-on sensors for our HVAC Smart Relay Switch (HSRS), RF wireless model, GEN3. 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:


  G3-Mini G3-Basic
RF Range 50 ft. 65 ft.
Battery CR2032 CR123A
Dimensions 2.2″ x 1″ x 0.25″ 3.1″ x 1.6″ x 1.2″
Wired input
No Yes
Mounting tape tape+screws


  • GEN3 – There are two available third generation sensors: mini and basic. The mini sensor has an effective wireless range of 50 ft. and operates on a single CR2032 lithium coin-cell (included). The basic sensor has an effective range of 65 ft. and includes a CR123A cell. Each is pre-programmed with a unique, permanent address (over 16 million possible IDs). The mini sensor measures 2.2″H x 1″W x 0.25″D and includes foam mounting tape (no screws). The basic sensor measures 3-1/16”H x 1-9/16”W x 1-3/16”D and includes foam mounting tape and screws.
  • Notes:
    • GEN2 and GEN3 product generations are not cross-compatible as they operate on different radio frequencies. Therefore, a 2nd generation controller will not accept a 3rd generation sensor. Nor will a 3rd generation controller recognize a 2nd generation sensor.
    • The G3-basic sensor provide 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 (except G3-Mini)


  • G3-Mini sensor requires one (1) lithium coin cell (CR2032), included.
  • G3-Basic sensor requires one (1) lithium battery (CR123A), included.


Tech Sheets:

Mini (GEN3)Basic (GEN3)


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)