Leviton OSSMT-GDW 120 to 277 VAC 1-Pole 1/4 Hp White Passive Infrared/Ultrasonic Wall Switch Occupancy Sensor
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Manufacturer Leviton
Mfg Catalog # OSSMT-GDW
North Coast Part # 487278


  • Fast, simple Installation: Fits in a standard wall box and replaces a single-pole wall-switch; neutral and no neutral options available. Sensor can be ganged together with other units in a multiple-switch wall plate.
  • Low-profile design eliminates obtrusive “scanning-device” look. Elegant Decora wallplates complement any interior for sleek aesthetics; uses Decora wallplates and coordinates with Leviton’s popular line of Decora wiring devices.
  • Convenient Pushbutton provides manual-ON/OFF light switching at any time.
  • Segmented Fresnel lens provides optimum sensitivity and performance. Designed with an extensive “minor motion” area where even slight body movements will be detected.
  • Vandal resistant PIR lens.
  • Adjustable horizontal field-of-view (PIR may be adjusted between 180° and 60° of arc by using integral blinders located on either side of the lens). No masking required.
  • Manual-ON/auto-OFF mode for installations where manual-ON switching is required but auto-OFF switching is still desired for CEC Title 24 energy savings.
  • To comply with CED Title 24, LED indicator light flashes when sensor detects motion to verify detection is active. Green flashes for ultrasonic, red flashes for PIR.
  • Time: The delayed OFF time is preset at 30 minutes in the Auto Adapting mode. A choice of four delayed-OFF time settings are available: 30-seconds (for walking test purposes only), 10, 20, and 30 minutes for fixed time and auto adapting. The LED will flash when the adjusting knob is set to the indicated time value.
  • Ambient Light Recognition: Integrated light sensor prevents lights from turning on when the room is adequately illuminated by natural light.
  • Self-Adaptive Technology: Callbacks for adjustment are eliminated. Time delay and sensitivity settings are continually adjusted to occupant patterns of use in auto adapt mode.
  • Exclusive Walk-through Feature provides increased energy savings by not leaving the lights ON for an extended period after only momentary occupancy.
  • Vacancy Confirmation: When the time out expires and the relays turn OFF, a 30 second (OSSMT-G) or 40 second (OSSMT-M) vacancy confirmation exists to turn the relays back on.
  • False detection circuitry.
  • Small Motion Sensitivity (U/S): Ultrasonic technology provides excellent minor motion sensitivity.
  • Ability to disable U/S (OSSMT-M). For added flexbility, OSSMT-G has the ability to disable both PIR and U/S.
  • Presentation Mode feature: For slide or film presentations, allows pushbuttons to turn lights OFF and keep them OFF while the room is occupied.
  • Exclusive Leviton H.I.S. Circuitry. Specifically designed to handle today’s high inrush electronic ballast loads and offer unmatched durability and service.
  • True Zero-Cross Relay switches at the zero crossing point of the AC power curve to ensure maximum contactor life and compatibility with electronic ballasts.


Mechanical Specifications

  • Switch Type: Single-Pole
  • Neutral Wire Connection: Not Required

Standards and Certifications

  • Code Compliance: California Title 24
  • Power Pack: External Power Pack Not Required
  • Mounting: Wall Switch
  • Relative Humidity: 20% to 90% non-condensing
  • Device Type: Occupancy Sensor
  • Operating Temperature: 0C to 50C
  • Coverage (Sq.Ft.): 2400
  • Switch Type: Single-Pole
  • Standards and Certifications: UL/cUL
  • Neutral Wire Connection: Not Required
  • Photocell: Internal
  • Pattern: 180°
  • Time Delay: 30s-30m
  • NAFTA Compliant: Yes
  • Consumption (mA): N/A
  • Wallplate: Order Separately
  • Warranty: 5-Year Limited
  • Title 24 Compliant: Yes
  • Storage Temperature Range: -10°C to 85°C
  • Color: White
  • HVAC Relay: N/A
  • Load Rating: 800W@120V INC 1200VA@120V 2700VA@277V FL
  • Grade: Commercial
  • LED Color: Green and Red
  • Voltage: 120/277 VAC
  • Motor: 1/4 HP @ 120V
  • Product Line: OSSMT
  • Mounting Height (Ft.): 4 Ft.
  • Adjustment: Self-Adjusting
  • Technology: Multi-Technology PIR/Ultrasonic
  • Size: 4.06" H x 1.75" W x 1.85" D (103.2mm x 44.4mm x 47.2mm)

Electrical Specifications

  • Frequency: 50/60Hz
  • Voltage: 120/277 VAC

Product Features

  • Coverage (Sq.Ft.): 2400
  • Sensor Type: Wall Switch
  • Color: White
  • Country Of Origin: Mexico
  • Product Line: OSSMT
  • Technology: Multi-Technology PIR/Ultrasonic



UPC 07847740696
GTiN 00078477406960
Warranty Length 5 yr
Size 46 H x 1.75 W x 1.85 D IN
Color White
Operating Temperature 0 C
Voltage 120 Volt
Type Occupancy Sensor,Single-Pole Switch
Applications For Commercial use
Mounting Type Wall
Grade Commercial
Country of Origin Mexico
Standard CEC Title 24 Compliant,CSA,CUL,ETL\cETL Listed,FCC Compliant,NAFTA (CF434),UL Listed
Frequency 50/60 Hz
Switch Type Single-Pole
Temperature Rating 0 - 40 C
Family Brand Name Leviton
Certifications UL/cUL
Power Consumption 120 V
Response Time 30 min
Blade Dimensions 44.45 mm W x 46.99 mm D x 103.12 mm H
Environmental Conditions Humidity (20 To 90 Non-Condensing) %
Sensor Type Ultrasonic, Passive Infrared
Number of Poles 1 Pole
LED Color Green,Red
Device Type Occupancy Sensor
Coverage 2400 sq-ft
Storage Temperature -10 To 85 C
Sub Brand Decora

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