Lithonia Lighting 2BLT2: 2'x2' Volumetric Recessed LED Luminaire
Model: 2BLT2
Features & Specifications
Intended Use
The BLT Best-in-Value Low Profile LED luminaire features a popular center basket design offering a clean, versatile style and volumetric distribution. High efficacy LED light engines deliver energy savings and low maintenance compared to traditional sources. An extensive selection of configurations and options make the BLT suitable for many lighting applications including schools, offices, commercial spaces, retail, hospitals, and healthcare facilities. The low profile BLT design (2-3/8 inches) also makes it an excellent choice for renovation projects.
Construction
BLT components are coated with a proprietary paint blend and die-formed for dimensional consistency. The reflector is available in smooth or ribbed finishes. End plates feature integral T-bar clips for secure attachment to T-grid ceilings, with optional screw-on clips available for added security. Diffusers are extruded from impact-modified acrylic for increased durability. LED boards and drivers are accessible from the plenum.
Optics
Volumetric illumination is achieved by creating an optimal mix of light to walls, partitions, and vertical and horizontal work surfaces, rendering the interior space in a balanced, luminous environment. High-performance extruded acrylic diffusers conceal LEDs and efficiently deliver light in a volumetric distribution. Four diffuser choices are available: curved and square designs with ribbed or smooth frosted finishes.
Electrical
Long-life LEDs coupled with high-efficiency drivers provide superior illumination quality and quantity for extended service life. Features 80% LED lumen maintenance at 60,000 hours (L80/60,000) and color variation within a 3-step MacAdam ellipse (3SDCM).
- Non-Configurable BLT: Generic 0-10 volt dimming driver, dims to 10%.
- Configurable BLT: Available in High Efficiency (HE) versions for applications requiring lower wattage. These versions deliver >130 LPW and can be specified via Lumen Package designations.
- eldoLED Driver Options: Offer choice of dimming range and control, assuring flicker-free operation, low-current inrush, 89% efficiency, and low EMI.
nLight Controls Integration
Optional integrated nLight controls make each luminaire addressable, allowing digital communication with other nLight-enabled controls like dimmers, switches, occupancy sensors, and photocontrols. Connection is simple via integrated nLight AIR wireless rIO and rES7 sensors, or standard Cat-5 cabling. nLight offers plug-and-play convenience with automatic device discovery and self-commissioning. nLight AIR is commissioned via an intuitive mobile app.
Lumen Management
A unique lumen management system (option N80) provides on-board intelligence to actively manage the LED light source, maintaining constant lumen output over the system life and preventing energy waste from over-lighting. A step-level dimming option allows the system to be switched to 50% power for compliance with energy codes while maintaining fixture appearance.
Sensors
Integrated Sensor (Individual Control): Sensor Switch MSD7ADCX (PIR) or MSDPDT7ADCX (PIR/Microphonics Dual Tech) integrated occupancy sensor/automatic dimming photocell powers off the luminaire when the space is unoccupied or sufficient ambient light is present.
Integrated Sensor (nLight Wired Networking): nLight-enabled sensor communicates over an nLight network via CAT-5 cabling with other nLight-enabled devices. Creates control zones for remote monitoring and control via SensorView software when linked to a Gateway.
Integrated Smart Sensor (nLight Air Wireless Platform): RES7 sensor is nLight AIR enabled, communicating over the wireless nLight control platform. Available with an automatic dimming photocell and PIR or microphonics (PDT) dual technology occupancy sensor. Pairs with other luminaires and wall switches via the CLAIRITY mobile app for simple sensor adjustment.
Integrated Wireless Sensor (Single Room Control): Sensor Switch VERTEX JOT or JOTVTX15 luminaire-embedded occupancy and ambient light sensor powers off the luminaire when the space is unoccupied or ambient light is sufficient.
Installation
The BLT's low profile design (2-3/8 inches) offers increased installation flexibility, especially in restrictive plenum applications. It fits into standard 15/16" and narrow 9/16" T-grid ceiling systems. Suitable for damp locations. Drywall Grid Adapters (DGA) are available as an accessory for recessed mounting in hard ceiling applications.
Listings
CSA Certified to meet U.S. and Canadian standards. IC rated. DesignLights Consortium® (DLC) Premium qualified product. Check the DLC Qualified Products List at www.designlights.org/QPL to confirm qualified versions.
Warranty
5-year limited warranty. Complete warranty terms available at www.acuitybrands.com/support/warranty/terms-and-conditions.
Note: Actual performance may differ based on end-user environment and application. Values are design or typical, measured under laboratory conditions at 25°C. Specifications are subject to change without notice.
Ordering Information
Lead times vary by options. Consult sales representative. A+ Capable options are indicated by a specific color background.
| Series | Fixture Style | Air Function | Lumens | Diffuser | Voltage | Driver | Color Temperature |
|---|---|---|---|---|---|---|---|
| 2BLT2 | 2x2 BLT (blank: Smooth Reflector, RB: Ribbed Reflector) | (blank): Static, A: Air supply/return | Standard: 20L (2000), 33L (3300), 40L (4000), 48L (4800) High Efficiency: 20LHE, 33LHE, 40LHE, 48LHE | ADP (Curved, ribbed), ADSM (Curved, smooth), SDP (Square, ribbed), SDSM (Square, smooth), ADPT (Curved, ribbed), ADSMT (Curved, smooth), SDPT (Square, ribbed), SDSMT (Square, smooth) | MVOLT (blank), 120V, 277V, 347V | EZ1 (eldoLED dims to 1%), GZ1 (Dims to 1%), GZ10 (Dims to 10%), SLD (Step-level dimming) | LP830 (3000K), LP835 (3500K), LP840 (4000K), LP850 (5000K), LP930 (90CRI 3000K), LP935 (90CRI 3500K), LP940 (90CRI 4000K), LP950 (90CRI 5000K) |
nLight Interface: nLight Wired (blank: no interface, N80: 80% lumen management, N80EMG: 80% lumen management with generator supply, N100: no lumen management, N100EMG: no lumen management with generator supply); nLight Wireless (blank: no interface, NLTAIR2: nLight AIR Gen 2 enabled).
Control: nLight Wired (blank: no sensor, NES7: PIR sensor, NESPDT7: Dual Tech sensor, NES7ADCX: PIR sensor + photocell, NESPDT7ADCX: Dual Tech sensor + photocell); nLight Wireless (RES7: PIR sensor + photocell, RES7PDT: Dual Tech sensor + photocell, RIO: radio module, RES7EM: PIR sensor + photocell + EM, RES7PDTEM: Dual Tech sensor + photocell + EM, RIOEM: radio module + EM); Individual Control (MSD7ADCX: PIR sensor + photocell, MSDPDT7ADCX: Dual Tech sensor + photocell, JOT: Wireless room control, JOTVTX15: Wireless occupancy sensor).
Standby Mode: NOC (Occupancy sensor disabled).
Options: BDP Disconnect Plug (EL7L, EL14L, EL14LSD, E10WLCP for battery backup), CP (Chicago plenum), BGTD (Bodine Generator Transfer Device), PWS (pre-wire options), GLR/GMF (fuses), NPLT (Narrow pallet), RRL_ (RELOC®-ready), LATC (Earthquake clip), DWAM (Anti-Microbial paint), JP28/JP36 (Job packaging), IP5X (Gasketed diffuser compartment).
nLight Platform
nLight Air Wireless
The nLight AIR platform offers a straightforward approach to installation and pairing of lighting fixtures and controls without 0-10V control wires or mobile apps. Simple setup involves installing fixtures/controls, pairing via a tool, and then the fixtures dim to 10% brightness.
nLight embedded fixtures offer: Manual Dimming, Motion Sensing and/or Daylight Harvesting, Fixture or Group Level Control, Flexibility, Wireless Wall Switch, Astronomical and Time of Day Scheduling, Scalable Solution, Future-Ready.
Customers benefit from: Convenience and visual comfort, Energy savings and code compliance, Ability to configure lighting, Ease of moves/adds/changes, Ease of placement, Energy savings and building security, Controls that grow with the business, Foundation for future upgrades.
nLight Wired Networking
The nLight Wired platform enables fixtures to communicate over CAT-5 cabling with other nLight-enabled devices, offering plug-and-play convenience. Devices automatically discover and self-commission.
Simple setup: Install nLight Wired fixtures, install nLight Wired wall switch, connect devices with CAT5e cables.
Sensors and Control Options
Sensor Options Summary
| Option | Automatic Dimming Photocell | Occupancy Sensing | nLight Wired Networking | nLight AIR Networking | |
|---|---|---|---|---|---|
| PIR | PDT | ||||
| MSD7ADCX | ✔ | ✔ | |||
| MSDPDT7ADCX | ✔ | ✔ | ✔ | ||
| NES7 | ✔ | ✔ | ✔ | ||
| NES7ADCX | ✔ | ✔ | ✔ | ||
| NESPDT7 | ✔ | ✔ | ✔ | ✔ | |
| NESPDT7ADCX | ✔ | ✔ | ✔ | ✔ | |
| RES7 | ✔ | ✔ | ✔ | ||
| RESPDT7 | ✔ | ✔ | ✔ | ||
Sensor Coverage Pattern (Mini 360° Lens)
Recommended for walking motion detection from mounting heights between 8 ft (2.44 m) and 20 ft (6.10 m). Provides up to 12 ft (3.66 m) radial detection of small motion when mounted at 9 ft (2.74 m).
Coverage Diagram: A radial diagram shows coverage distances in feet and meters at 9 ft mounting height, illustrating detection zones.
Integrated Sensor Applications
- MSD7ADCX (PIR): Ideal for areas without obstructions and where daylight harvesting is desired (hallways, corridors, storage rooms, breakrooms).
- MSDPDT7ADCX (PIR/Microphonics Dual Tech): Ideal for areas with obstructions and where daylight harvesting is desired (open offices, private offices, classrooms, public restrooms, conference rooms).
nLight AIR Wireless (Sensor Details)
nLight AIR is ideal for retrofit or new construction where wiring is difficult. Integrated rES7 or rES7PDT smart sensors in each luminaire can be grouped to control multiple luminaires. Offers granular control with digital PIR occupancy detection and daylight sensing.
nLight Wired Networking (Sensor Details)
nES7 is ideal for small rooms without obstructions or areas with primarily walking motion (hallways, corridors, storage rooms, breakrooms). nES7ADCX includes a photocell for daylight harvesting. For areas with obstructions or varied motion, nESPDT7 (Dual Technology) is recommended. nESPDT7ADCX includes a photocell for daylight harvesting.
Sequence of Operation
MSD7 Sensor: Lights turn ON when motion is detected and stay ON for a set time delay (e.g., 17.5 min) after no motion is detected. Automatic dimming photocell adjusts light based on ambient light levels.
nES7 and rES7 Sensors: Similar operation with motion detection triggering lights ON and a time delay before turning OFF. Automatic dimming photocell adjusts light based on ambient light levels (5fc for NES7, 10fc for RES7).
Accessories & Replacement Parts
Accessories
- DGA22: Drywall grid adapter for 2x2 recessed fixture
- 2X2SMKSHP PAF: Surface Mount Troffer Kit Post Paint
- RK8BDP 2P U: Disconnect Plug (BDP), 2 Pole, Package of 1
- RK8BDP 3P U: Disconnect Plug (BDP), 3 Pole, Package of 1
- RK8BDP 2P J10: Disconnect Plug (BDP), 2 Pole, Package of 10
- RK8BDP 2P J40: Disconnect Plug (BDP), 2 Pole, Package of 40
Replacement Parts
Various lens assemblies are available for different diffuser types (ADP, SDP, ADSM, SDSM, ADPT, SDPT, ADSMT, SDSMT) and sensor configurations.
JOT Wireless Sensor Switch
The Sensor Switch JOT enabled wireless solution offers a straightforward approach to installation and pairing of lighting fixtures and controls, requiring no 0-10V control wires or mobile apps. Installation is fast:
- Install JOT enabled fixtures and controls.
- Pair by inserting the pairing tool into the wall switch pinhole and holding any button for 6 seconds.
- Once paired, fixtures dim to 10% brightness, and all products become fully functional.
Components: BLT Series Sensor Switch WSXA JOT, BLT Series with integrated JOT OCC Sensors, Sensor Switch SPODMRA JOT.
Constant Lumen Management
Enabled by embedded nLight control, the BLT actively tracks its run-time and manages its light source to maintain constant lumen output over the system life. This feature eliminates energy waste from traditional over-lighting practices, ensuring consistent light levels and saving energy.
Diagrams: Visual comparison showing "Without Lumen Management" (wasted energy, inconsistent light) and "With Lumen Management" (saved energy, consistent light).
Photometrics & Performance Data
Detailed photometric data, including Coefficients of Utilization (CU) and Zonal Lumen Summaries, is available for various configurations (e.g., 2BLT2 33L ADP LP835, 2BLT2 40L ADP LP835) tested according to IESNA LM-79 standards.
Performance data tables list Model Number, Lumens, LPW, Watts, DLC Listing, and DLC ID for both standard and HE (High Efficiency) versions. DLC information is subject to change and can be verified at www.dlc.org.
Information is also provided on estimating delivered lumens in emergency mode using a provided formula.
