Wall Switch Sensors


Series Downloads


Single Pole
Dual Pole


The SENSORWORX family of wall switch occupancy sensors provides a simple yet cost-effective lighting control solution for many retrofit applications. Designed with contractors in mind, the SENSORWORX wall switch sensor is significantly shallower than typical sensors, resulting in less crowded wall boxes. Additionally, versatile wiring enables usage with or without a neutral and allows reversal of line and load connections. SENSORWORX products utilize the latest passive infrared technology and digital signal processing techniques to provide unmatched motion detection performance. These units are also available with an integrated microphone to provide overlapping passive acoustic occupancy detection for rooms with obstructions or where occupant motion is limited.

Basic Operations

Sensors detect movement in the infrared energy that radiates from occupants as they move within the devices field-of-view. Once occupancy is identified, the sensor’s internal relay switches power on to the connected lighting. Units can also be configured to operate in Vacancy Mode (e.g., require lights be manually switched on). Once lights are on and if equipped with passive dual technology (PIR/Acoustic), the unit’s microphone is enabled to further enhance detection. An internal timer is set to keep lights on during brief periods of inactivity, and is reset every time occupancy is signaled by either the passive infrared or acoustic detection technologies. Ambient daylight detection can also be enabled in equipped units so that lights are held off in rooms with sufficient light contribution from windows or skylights.


A wall switch sensor is typically used to retrofit an existing wall switch in a small room or enclosed space. A Passive Infrared (PIR) only sensor is sufficient for spaces where line of site is maintained and occupants are periodically moving (e.g., copy rooms, storage rooms). Dual technology sensors are necessary where occupants may be partially blocked from the sensor’s direct view or where they may be stationary (e.g., private offices or restrooms with stalls).

  • Private Restrooms
  • Copy Rooms
  • Restroom with Stalls
  • Small Meeting Room
  • Small Office
  • Vestibule
  • Storage Room
  • Break Room

Features / Wall Switch Sensors

Electrical Features

  • Interchangeable Line & Load Wires –
    Impossible to Wire Backwards

  • Accommodates Neutral (3-Wire)
    and No-Neutral (2-Wire) Installation

  • Electronically Timed Switching
    Ensures Long Relay Life

  • Compatible with LED, Fluorescent
    and Incandescent Lighting

  • Meets NEC 404.2(c) & 404.22 Guidelines Regarding Powering Over Ground & Current Leakage

Physical Features

  • Enclosure is 25-40% Shallower than
    Other Sensors (< 1” depth into wallbox)

  • Unique Bat-Wing Shaped Lens Provides
    Enhanced Peripheral Detection

  • Self-Grounding Mounting Strap

  • Modern Look and Intuitive
    Easy-Tap Button

  • Rugged Vandal Resistant Lens

  • Settings are Adjustable Without Removing
    Cover Plate

Operational Features

  • Wall-To-Wall Passive Infrared
    Small Motion Detection

  • Passive Acoustic Detection (Optional) –
    Prevents False Offs when No Motion is Present

  • 100% Passive Detection Methods –
    No Interference Potential from External Devices

  • Ambient Daylight Override Mode Increases Energy Savings

  • Configurable Time Delays and Operating Modes

  • Blue Locator LED when Lights are Off

Multi-Gang Switch Replacement

Many residential and commercial building spaces contain multi-gang switch locations (i.e. locations on the wall that have more than one single-gang switch devices in the same wall box). The SENSORWORX solution for these applications utilizes a wall switch occupancy sensor and one or more added “sidecar” wall switches that receives necessary occupancy information from the adjacent sensor. Each unit can be configured separately for Auto On or Manual On (Vacancy) operation and time delay. Most conveniently, this solution enables adding a standard multi-gang decorator switch plate in order to provide an aesthetically pleasing appearance without any awkward and conspicuous blank wall plate sections. Additional sidecar switches can also be added to create 3-pole (or greater) solutions.

Many older buildings have fluorescent light fixtures wired for inboard/outboard control by a pair of wall switches. Retrofitting these wall switches with code-compliant controls is attractively done with a SENSORWORX 2-pole solution (model: #SWX-102 or SWX-122). These two unit kits contain an Auto On occupancy sensor and a Manual On sidecar switch that work together to meet the required partial on energy code requirements.

Bathrooms often have separate switches for lights and ventilation fans. In some cases two switches for lights (e.g. vanity and shower) and the fan are all contained in the same 3-gang wall box along the entry wall. Retrofitting these switches with a SENSORWORX wall switch sensor and two sidecar switches is an attractive and energy efficient solution for providing occupancy control of all three loads.



2.74”H x 1.68”W x 1.39”D
(6.96 x 4.27 x 3.53 cm)
Not Including Mounting Strap

4.5 oz

Single Gang Switch Box


120/277 VAC, 50/60 Hz

MAX: 800W @ 120VAC
1200W @ 277VAC
MIN: None

LED Driver/Lamps
CFL, Electronic/Magnetic Ballasts (Fluorescent)
Tungsten (Incandescent)


32°F to 122°F
(0°C to 50°C)

0-95% Non-Condensing,
Indoor Use Only

Code Compliance

Sensors can be used to meet ASHRAE 90.1, IECC, & Title 24 energy code requirements.

Common Energy Code Definitions:

  • Occupancy Operation: Auto On/Auto Off
  • Vacancy Operation: Manual On/Auto Off
  • Partial On Operation:
    • 1st Pole Auto On / 2nd Pole Manual On
    • Auto On to 50% / Manual On to 100%
    • All Poles Auto Off


  • 30” to 48” (0.76 – 1.22 m) recommended mounting height

  • Wall to wall (~180 degree) coverage

  • Small motion (e.g., hand movement) detection up to 20 ft (6.10 m), ~625 ft2

  • Large motion (e.g., walking) detection greater than 36 ft (10.97 m), ~ 2025 ft2

  • Overlapping acoustic detection of occupants over entire coverage area

  • Advanced signal processing filters out nuisance noises while not effecting overall sensitivity

Operation Settings

Time Delay

  • Test Mode, 30 sec, 5-30 min

  • Both master wall switch sensor unit and sidecar switch unit in 2-Pole solution have independent time delay

Ambient Light (Daylight) Detection

  • Sensor holds lights off when ambient light is present

  • Manual threshold levels or auto-selection of threshold level

  • Disabled when in Vacancy (Manual On) mode

Turn-On Sensitivity

  • When enabled, this setting reduces the sensor’s PIR sensitivity for initial turn-ons in order to eliminate false on caused by reflective surfaces like windows

  • Unit returns to full sensitivity after initial turn-on

LED Functionality

  • White LED blinks upon occupancy detection

  • Blue LED serves as a switch locator when lights are off

  • LED functionality can be disabled

Operational Modes

SENSORWORX wall switch sensors are intelligent devices that provide both excellent energy savings and enhanced user convenience. Users can choose from several pre-programmed operational modes that best fit their preferences and applicable energy codes. Note that both the master wall switch sensor unit and sidecar switch unit in 2-Pole solution (SWX-102, SWX-122) have independent operational modes.

Vacancy Mode
Manual On / Automatic Off operation. Lights can also be switched off manually. This mode provides increased energy savings but requires the user to initially turn on the lights. Models SWX-103, SWX-104, SWX-123, and SWX-124 default to Vacancy modes. Sidecar switch units (SWX-831-SC) in 2-Pole kits also default to Vacancy mode.

Occupancy Mode
Automatic On and Automatic Off operation. If lights are switched off manually, the Automatic On functionality is temporarily disabled to allow the occupant a few seconds to leave the room before returning to Automatic On operation. However, if the person remains in the space, the unit will stay in a manual on state until the switch is pressed again. This mode is the default operation of SWX-101, SWX-111, SWX-121, and SWX-131 models.

Automatic On w/ Exit Time Mode
Automatic On and Automatic Off operation. If lights are switched off manually, the Automatic On functionality is disabled for a fixed 30 seconds to allow a person time to leave the room.

Override Off Mode
Automatic On and Automatic Off operation until lights are switched off manually, at which point Automatic On functionality is disabled until the switch is pressed again.

Disabled Switch Mode
Automatic On and Automatic Off operation only. Switch functionality to manually turn on/off lights is disabled.

Presentation Mode
If lights are switched off manually, the Automatic On functionality is disabled until the space becomes unoccupied and the sensor’s time delay expires.

Wiring Diagrams

  • Unit works both in installations where Neutral connection is available as well as installations where only Ground connection is present

  • The unit’s two black wires are interchangeable (e.g., one connects to line power, one connects to load)

Standard Wiring


3-Way Wiring


  • Both sensors must time out for lights to turn off (or both buttons must be switched)
  • Recommended for Automatic On (Occupancy) applications only

2-Pole Wiring

  • 2-Pole solution includes a single pole occupancy sensor and a connected “sidecar” switch unit for second pole
  • Requires two-gang box and decorator wall plate.
  • Units can be powered from same or different circuits/voltages.

Neutral to Ground Conversion Detail

  • The white wire has a removable sleeve which reveals a green/yellow wire

Installation Options

Ordering Info

SWX–Wall Switch Sensor1Passive Infrared (PIR)01-Pole: Auto On1White–WHSingle Pack(Blank)
Passive Infrared (PIR) + Daylight12-Pole: Partial On2Ivory–IV10 Pack**–J10
Passive Dual Technology (PIR/Acoustic)21-Pole: Manual On (Vacancy)3Light Almond–LA
Passive Dual Technology (PIR/Acoustic) + Daylight3Gray–GY


Wall Switch Sensors Popular Model Numbers

SWX-101-WHSingle Pole, PIR, Auto On, White
SWX-102-WH2-Pole Kit w/ PIR Sensor & Sidecar Switch, White
SWX-103-WHSingle Pole, PIR, Manual On, White
SWX-121-WHSingle Pole, Dual Tech., Auto On, White
SWX-122-WH2-Pole Kit w/ Dual Tech. Sensor & Sidecar Switch, White
SWX-123-WHSingle Pole, Dual Tech., Manual On, White

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