Dual relay multi-tech wall box occupancy sensor lighting control

The Leviton OSSMD is a dual relay multi-technology occupancy sensor designed for automatic lighting control in commercial applications. It integrates passive infrared (PIR) and ultrasonic sensing technologies to detect occupancy and control two separate lighting loads from a single-gang wall box. Suitable for a variety of lighting solutions, this sensor supports incandescent, fluorescent, low-voltage lighting, and fan loads, making it ideal for electrical distributors, lighting solutions providers, wire and cable installers, and switchgear suppliers.

Specifications

• Manufacturer Part #: OSSMD-MDI
• Line Voltage: 120-230-277 VAC
• Power Consumption: 210mW (120V MD), 140mW (120V GD), 410mW (277V MD), 360mW (277V GD)
• Operational Frequency: 50/60 Hz
• Ultrasonic Operating Frequency: 40 kHz
• Coverage Area: 2400 square feet
• Field-of-View: 180°
• Load Rating Primary Relay: Fluorescent 1200VA @ 120V, 2700VA @ 277V; Incandescent 800W @ 120V
• Load Rating Secondary Relay: Fluorescent 800VA @ 120V, 1200VA @ 277V; Incandescent 800W @ 120V; Motor 1/4 HP
• Operating Temperature Range: 32-104°F (0-40°C)
• Relative Humidity: 20-90% non-condensing
• Color: Ivory
• Grade: Commercial
• Certifications: ETL/cETL listed, CSA, meets California Title 20/24 energy code, FCC, and NOM
• LED Indicator Color: Green (ultrasonic), Red (PIR)
• Weight: 3.8 lbs

Features

• Dual relay control for two separate lighting banks with manual-ON/auto-OFF or auto-ON/auto-OFF modes
• Compatible with incandescent, fluorescent, low-voltage lighting, and fan loads
• Fits in a standard single-gang wall box, replacing two single-pole wall switches
• Adjustable horizontal field-of-view between 180° and 60° using integral blinders
• Self-adaptive technology automatically adjusts time delay and sensitivity based on occupancy patterns
• Time delay settings from 30 seconds to 30 minutes for energy savings customization
• Light sensor measures ambient light to prevent unnecessary lighting
• Vacancy confirmation feature with 30-second reactivation window after timeout
• Presentation mode allows lights to be turned off during presentations while room is occupied
• Vandal-resistant PIR lens with segmented Fresnel design for enhanced sensitivity
• True zero-cross relay switching extends contactor life and ensures compatibility with electronic ballasts
• Compliance with California Title 20/24 energy efficiency standards
• Manual override pushbuttons for each load
• Ability to disable either PIR or ultrasonic sensing for installation flexibility
• High inrush stability circuitry to handle electronic ballast loads

Downloads & Links

• Application Note - ADA and FDA Ultrasonic and MultiTechnology
• Product Specification and Data Sheet
• Instruction Sheet - Spanish
• Application Note - IECC VS ASHRAE 90.1-2001
• Technical Article - Occupancy Sensors and Fluorescent Lamp Life
• Compliance Letter - NAFTA
• Application Note - Changes in Title 24
• Application Note - Energy Policy Act of 2005
• Application Note - How Leviton is Ready to Help You Achieve Leed Points
• Specification (AIA) - Occupancy Sensors
• Instruction Sheet - French
• Reference - Occupancy Sensor Technology Intro
• Instruction Sheet
• Application Note - IRS AND ENERGY MANAGEMENT OFFICIAL STATEMENT