Features & Specifications
The Lithonia Lighting 2BLT2R is a 2'x2' LED relight fixture designed to retrofit existing fluorescent troffers. It offers advanced features for performance, energy efficiency, and control integration.
Intended Use
Designed for retrofitting nearly any 2'x2' fluorescent lensed or parabolic troffer. Suitable for T-grid mounted recessed units, with optional brackets for drywall or surface mounting. UL rated for use in air-handling troffer housings. Bypasses old fluorescent components for reliable performance and serves as a platform for networked controls. Note: Certain airborne contaminants may affect acrylic integrity.
Construction
Features universal end brackets made of painted steel, designed for secure fit in 2'x2' troffers. The unitized doorframe reflector and electrical chassis requires no field assembly and is finished with high-reflectivity matte white powder coating. Diffuser trim rings provide a finished appearance and mounting points for integral controls. All electrical and mechanical components are accessible from below the ceiling plane.
Optics
Provides volumetric illumination by optimizing light distribution to walls, partitions, and work surfaces for a balanced luminous environment. High-performance extruded acrylic diffusers conceal LEDs and deliver light volumetrically. Available diffuser options include curved and square designs with linear prisms or a smooth frosted finish. An optional lower glare, very low UGR lens is also available.
Electrical
Utilizes long-life LEDs and high-efficiency drivers for superior illumination and extended service life. Achieves greater than 80% LED lumen maintenance at 60,000 hours (L80+ > 60,000) and a calculated L70 lumen maintenance greater than 150,000 hours. Color variation is within a 3-step MacAdam ellipse (35DCM).
Base (Non-Configurable) BLTR
Features a generic 0-10 volt dimming driver, dimming down to 10%.
Configurable BLTR
Offers over 135 LPW across various lumen outputs, CCTs, and driver options. eldoLED driver options provide choice of dimming range and control, ensuring flicker-free operation, low inrush current, 89% efficiency, and low EMI. A step-level dimming option allows for 50% power compliance with energy codes. Optional Field Adjustable Output (FAOE, FAO) devices allow for mechanical adjustment of high-end lumens.
Sensors
Integrated Sensor (Individual Control): Features SensorSwitch MSD7ADCX (PIR) or MSDPDT7ADCX (PIR/Microphonics Dual Tech) integrated occupancy sensor/automatic dimming photocell. This allows the luminaire to power off when the space is unoccupied or when sufficient ambient light is present.
Integrated Sensor (nLight Wired Networking): This sensor is nLight-enabled, communicating over an nLight network via CAT-5 cabling. When linked with other nLight-enabled devices, it forms an nLight control zone, enabling remote status monitoring and control via SensorView software when connected to a Gateway.
Integrated Smart Sensor (nLight Air Wireless Platform): The rES7 sensor is nLight AIR enabled, communicating wirelessly. It includes an automatic dimming photocell and either a digital PIR or microphonics (PDT) dual technology occupancy sensor. It pairs with other luminaires and wall switches via the CLAIRITY™ mobile app for simple sensor adjustment.
Integrated Wireless Sensor (Single Room Control): Features SensorSwitch SSAIR or SSAIR VAPIR luminaire-embedded occupancy and ambient light sensor, allowing the luminaire to power off when unoccupied or when sufficient ambient light is present.
Installation
After removing existing fluorescent components, universal end brackets are secured with TEK™ screws. The integrated driver and light engine door assembly hinges to the brackets and hangs for plug-in wiring. The doorframe assembly closes and secures with cam latches. Suitable for damp location installations (sensor versions are not damp location rated).
Listings
UL/cUL Listed for use in fluorescent luminaires. Classified for static and air-handling troffer housings. Installation does not impact existing fixture UL listing (excluding wet locations). Tested to LM80 standards. DesignLights Consortium (DLC) Premium and DLC qualified product (check DLC QPL for specific versions).
Buy American Act
Product with BAA option is assembled in the USA and meets Buy America(n) government procurement requirements. Standard 2BLT2R meets TAA requirements.
Warranty
5-year limited warranty. All other express and implied warranties are disclaimed. Full terms available at www.acuitybrands.com/support/warranty/terms-and-conditions.
Note: Actual performance may vary 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.
Specifications
| Type | Specifications |
|---|---|
| Length | 23.9 inches (60.7 cm) |
| Width | 23.9 inches (60.7 cm) |
| Depth | 2.75 inches (6.9 cm) |
| Weight | 10 lbs (25.4 kg) |
All dimensions are in inches (centimeters) unless otherwise specified.
Ordering Information
Lead times vary based on selected options. Consult your sales representative.
Example: 2BLT2R 33L ADP EZ1 LP835
| Series | Trim Type/Air Function | Lumens² | Diffuser | Voltage | Driver | Color Temperature |
|---|---|---|---|---|---|---|
| 2BLT2R 2X2 | (blank) Standard white two-piece flanged bracket | Standard efficiency (>125 LPW) | ADP Curved, linear prisms | (blank) MVOLT | EZ1 eldoLED dims to 1% (0-10 volt dimming) | LP830 82CRI, 3000 K |
| BLTR | A Standard two-piece flanged bracket painted black to match parabolic / air-handling reveals | High efficiency³ (>130 LPW) | ADSM Curved, smooth | 120 120V | GZ1 Dims to 1% (0-10V dimming)⁶ | LP835 82CRI, 3500 K |
| F Flangeless two-piece bracket for installation in drywall / "hard lid" ceilings | 20L 2000 33L 3300 40L 4000 | SDP Square, linear prisms | 277 277V | GZ10 Dims to 10% (0-10V dimming)⁶ | LP840 82CRI, 4000 K | |
| LPB One-piece low profile bracket for installation in some obstructed housings (consult factory) (see pg. 5) | 20LHE 2000 33LHE 3300 40LHE 4000 48LHE 4800 | SDSM Square, smooth | 347 347V⁴,⁵ | SLD Step-level dimming⁷ | LP850 82CRI, 5000 K | |
| Diffusers w/ trim rings ADPT Curved, linear prisms ADSMT Curved, smooth SDPT Square, linear prisms SDSMT Square, smooth | LP930 90CRI, 3000K LP935 90CRI, 3500K LP940 90CRI, 4000K LP950 90CRI, 5000K |
nLight Platform and Controls
nLIGHT® is a networked lighting controls platform for indoor and outdoor applications, offering wired or wireless options. It scales from room to campus-wide applications, providing energy cost optimization, building code compliance, and improved occupant comfort.
nLight Embedded Fixtures Offer:
- Manual Dimming
- Motion Sensing and/or Daylight Harvesting
- Fixture or Group Level Control
- Flexibility
- Wireless Wall Switch (nLight AIR Only)
- Astronomical and Time of Day Scheduling
- Scalable Solution
- Future-Ready
Customers Benefit From:
- Convenience and visual comfort for occupants
- Energy savings and code compliance
- Ability to configure lighting to space requirements
- Ease of fixture moves, adds, and changes
- Ease and flexibility of placement
- Energy savings and building security
- nLight controls to grow with your business
- nLight platform for future upgrades
nLIGHT also interfaces with DALI®, BACnet®, DMX, and other third-party devices. Visit nLIGHTcontrols.com.
Wired Embedded Controls
Installation Steps:
- Install luminaires with embedded controls.
- Install and wire the nLight Wired wall switch to power.
- Connect luminaires using standard CAT-5e cables; controls devices automatically discover each other and operate (plug and play).
Diagram Description: Shows luminaires connected via CAT-5e cable to an nLight Wired wall switch and an nLight nPODMA DX control device.
Wireless Embedded Controls
Installation Steps:
- Install luminaires with embedded controls.
- Install the nLight AIR battery-powered wall switch.
- Use the CLAIRITY™ mobile app to pair the fixture with the wall switch and customize sensor settings as desired.
Diagram Description: Shows luminaires, an nLight AIR battery-powered wall switch, and a mobile device for pairing and configuration.
Sensor Options Summary
The 2BLT2R offers various sensor options for occupancy detection and automatic dimming:
| Option | Automatic Dimming Photocell | Occupancy Sensing (PIR) | Occupancy Sensing (PDT) | nLight Wired Networking | nLight AIR Networking |
|---|---|---|---|---|---|
| MSD7ADCX | X | X | |||
| MSDPDT7ADCX | X | X | X | ||
| NES7 | X | X | |||
| NES7ADCX | X | X | X | ||
| NESPDT7 | X | X | X | ||
| NESPDT7ADCX | X | X | X | X | |
| RES7 | X | X | |||
| RESPDT7 | X | X | X |
Sensor Applications:
- MSD7ADCX (PIR): Ideal for areas without obstructions where daylight harvesting is desired (e.g., hallways, corridors, storage rooms).
- MSDPDT7ADCX (PIR/Microphonics Dual Tech): Suitable for areas with obstructions and daylight harvesting needs (e.g., open offices, private offices, classrooms).
- nLight AIR Sensors (rES7, rES7PDT): Wireless solution for retrofit or new construction, offering grouped control and granular detection.
- Wired Sensors (nES7, nES7ADCX, nESPDT7, nESPDT7ADCX): For small rooms or areas with walking motion (nES7) or spaces with obstructions (nESPDT7). nES7ADCX and nESPDT7ADCX include photocells for daylight harvesting.
Sensor Coverage Pattern: The Mini 360° Lens is recommended for walking motion detection from 8 ft to 20 ft (2.44 m to 6.10 m). It provides initial detection up to 15 ft (4.57 m) along sensor axes and 12 ft (3.66 m) radial detection of small motion at 9 ft (2.74 m) mounting height.
Sequence of Operation: Charts illustrate how sensors detect motion and adjust light levels, including time delays for unoccupied periods.
Installation and Compatibility
The 2BLT2R Relight Assembly is designed to upgrade recessed 2'x2' fixtures from most manufacturers.
Bracket Fit Recommendations
Various ceiling types are supported:
- T-grid (9/16" or 15/16"): Standard bracket recommended.
- Narrow Screw-slot Grid: Standard bracket may work; F bracket often suitable.
- Hard Ceiling with "Lay-In" style plaster frame (drywall grid adapter): Standard bracket recommended.
- Hard Ceiling with Integral drywall mounting ('swing gate' housing): F bracket recommended.
- 1x1 hard tile ceiling: F bracket recommended.
- Deep louver riser ("renovator" parabolic): LPB bracket recommended.
Bracket Types Explained
Standard BLTR bracket: Features a T-grid flange for standard installations.
BLTR "F" bracket: Lacks the standard T-grid return flange, making it suitable for many hard ceiling/drywall installations where the standard bracket might be obstructed, and often usable in narrow screw-slot grid ceilings.
LPB 1-piece low profile bracket: Designed for older troffers with endplate obstructions where the standard 2-piece bracket might not fit.
Replacement Parts
Replacement lens assemblies and bracket kits are available separately. For example, 2ft. replacement lens assemblies (trims included) and 2pc end bracket replacement kits (e.g., 2x2 Standard, 2x2 'F' bracket) are listed with specific catalog codes.
Advanced Features
STAR Emergency Lighting
Emergency Lighting with Self-Testing Automated Reporting (STAR) enables automated testing and reporting to aid in life safety code compliance (NFPA 101). It offers two deployment options:
- Mobile STAR: Test data logged in each unit and broadcast to the CLAIRITY™+ app. Suitable for small-scale applications.
- Connected STAR: Test data logged in the STAR Gateway by IOTA® and emailed directly. Suitable for large-scale applications.
STAR solutions eliminate the need for manual record-keeping and ladders for testing.
Constant Lumen Management (CLM)
Enabled by nLight controls, CLM actively tracks run-time and manages the light source to maintain constant lumen output over the system's life. This feature eliminates energy waste from traditional over-lighting practices, saving energy and ensuring consistent light levels.
Diagram Description: Two graphs illustrate the difference: "Without Lumen Management" shows wasted energy and inconsistent light output over time. "With Lumen Management" shows saved energy and consistent light output over time.
A+ Capable Luminaire
This luminaire is A+ capable, designed and tested for consistent color appearance and out-of-the-box control compatibility with Acuity Brands controls products. All configurations meet Acuity Brands' specifications for chromatic consistency, including color rendering, fidelity, and color temperature tolerance.
Performance Data
Photometrics
Detailed photometric data is available for various configurations, including lumen output, coefficients of utilization (CU), and zonal lumen summaries. This data is crucial for lighting design and analysis.
2BLT2R 33L ADP LP835, 3241 delivered lumens
| RCR | Coefficients of Utilization | Zonal Lumen Summary | ||||||
|---|---|---|---|---|---|---|---|---|
| 80% | 70% | 50% | 30% | Zone | Lumens | % Lamp | % Fixture | |
| 0 | 119 | 119 | 119 | 116 | 0°-30° | 852 | 26.3 | 26.3 |
| 1 | 108 | 103 | 98 | 100 | 0°-40° | 1385 | 42.7 | 42.7 |
| 2 | 98 | 89 | 82 | 87 | 0°-60° | 2440 | 75.3 | 75.3 |
| 3 | 89 | 78 | 69 | 76 | 0°-90° | 3242 | 100.0 | 100.0 |
| 4 | 81 | 69 | 60 | 67 | 90°-180° | 0 | 0.0 | 0.0 |
| 5 | 75 | 61 | 52 | 60 | 0°-180° | 3242 | 100.0 | 100.0 |
| 6 | 69 | 55 | 46 | 54 | ||||
| 7 | 64 | 50 | 41 | 49 | ||||
| 8 | 59 | 46 | 37 | 45 | ||||
| 9 | 56 | 42 | 34 | 41 | ||||
| 10 | 52 | 39 | 31 | 38 | ||||
2BLT2R 40L ADP LP835, 4210 delivered lumens
| RCR | Coefficients of Utilization | Zonal Lumen Summary | ||||||
|---|---|---|---|---|---|---|---|---|
| 80% | 70% | 50% | 30% | Zone | Lumens | % Lamp | % Fixture | |
| 0 | 119 | 119 | 119 | 116 | 0°-30° | 1107 | 26.3 | 26.3 |
| 1 | 108 | 103 | 98 | 100 | 0°-40° | 1799 | 42.7 | 42.7 |
| 2 | 98 | 89 | 82 | 87 | 0°-60° | 3169 | 75.3 | 75.3 |
| 3 | 89 | 78 | 69 | 76 | 0°-90° | 4211 | 100.0 | 100.0 |
| 4 | 81 | 69 | 60 | 67 | 90°-180° | 0 | 0.0 | 0.0 |
| 5 | 75 | 61 | 52 | 60 | 0°-180° | 4211 | 100.0 | 100.0 |
| 6 | 69 | 55 | 46 | 54 | ||||
| 7 | 64 | 50 | 41 | 49 | ||||
| 8 | 59 | 46 | 37 | 45 | ||||
| 9 | 56 | 42 | 34 | 41 | ||||
| 10 | 52 | 39 | 31 | 38 | ||||
Performance Data Tables
Detailed performance data for various lumen packages and color temperatures is provided:
Performance Data
| Lumen Package | Lumens | Input Watts | LPW |
|---|---|---|---|
| 20L ADP LP830 | 1981 | 16 | 127 |
| 20L ADP LP835 | 2051 | 16 | 132 |
| 20L ADP LP840 | 2084 | 16 | 134 |
| 20L ADP LP850 | 2143 | 16 | 138 |
| 33L ADP LP830 | 3237 | 26 | 125 |
| 33L ADP LP835 | 3351 | 26 | 130 |
| 33L ADP LP840 | 3404 | 26 | 132 |
| 33L ADP LP850 | 3502 | 26 | 135 |
| 40L ADP LP830 | 3900 | 31 | 125 |
| 40L ADP LP835 | 4038 | 31 | 130 |
| 40L ADP LP840 | 4102 | 31 | 132 |
| 40L ADP LP850 | 4220 | 31 | 136 |
HE Performance Data
| Lumen Package | Lumens | Input Watts | LPW |
|---|---|---|---|
| 20LHE ADP LP830 | 2008 | 16 | 129 |
| 20LHE ADP LP835 | 2079 | 16 | 134 |
| 20LHE ADP LP840 | 2112 | 16 | 136 |
| 20LHE ADP LP850 | 2173 | 16 | 140 |
| 33LHE ADP LP830 | 3068 | 24 | 128 |
| 33LHE ADP LP835 | 3176 | 24 | 133 |
| 33LHE ADP LP840 | 3227 | 24 | 135 |
| 33LHE ADP LP850 | 3319 | 24 | 139 |
| 40LHE ADP LP830 | 3797 | 29 | 129 |
| 40LHE ADP LP835 | 3931 | 29 | 133 |
| 40LHE ADP LP840 | 3994 | 29 | 135 |
| 40LHE ADP LP850 | 4108 | 29 | 139 |
| 48LHE ADP LP830 | 4532 | 36 | 126 |
| 48LHE ADP LP835 | 4692 | 36 | 130 |
| 48LHE ADP LP840 | 4767 | 36 | 132 |
| 48LHE ADP LP850 | 4903 | 36 | 136 |
Controls Accessories
nLight Wired Control Accessories
Order as separate catalog numbers. Visit www.acuitybrands.com/products/controls/nlight.
- WallPod Stations: On/Off (nPODMA), On/Off & raise/lower (nPODMA DX), Graphic touchscreen (nPOD TOUCH).
- Occupancy Sensors: Small motion 360° (nCM 9 RJB/nCM PDT 9 RJB), Large motion 360° (nCM10 RJB/nCM PDT 10 RJB), nCM ADCX RJB.
- Wall Switches: nWSX PDT LV DX [color].
- Cables: CAT5 10FT J1, CAT5 30FT J1.
nLight AIR Control Accessories
Order as separate catalog numbers. Visit www.acuitybrands.com/products/controls/nlightair.
- Wall Switches: On/Off single pole (rPODBA [color] G2), On/Off two pole (rPODB A2P [color] G2), On/Off & raise/lower single pole (rPODBA DX [color] G2), On/Off & raise/lower two pole (rPODBA 2P DX [color] G2).
BLTR fixtures with integrated rIO devices can be paired with an rCMS occupancy sensor for wireless sensing and dimming. Consult Tech Support for additional configuration options.
Diagram Description: Shows a typical office space with nLight AIR controls, including luminaires with rIO devices, an rCMS occupancy sensor, and wireless wall switches. Also includes wiring diagrams for nLight Wired and nLight AIR systems.
Field Adjustable Output (FAO/FAOE) Settings
FAO SETTINGS (Field Adjustable Output)
Allows simple adjustment of output via a flat head screwdriver:
| 0-10 Voltage Dimmer Setting | % Lumen Output (approximate) | % Wattage (approximate) |
|---|---|---|
| Step 8 (Full Output) | 100% | 100% |
| Step 7 (9.0 VDC) | 98% | 100% |
| Step 6 (8.0 VDC) | 88% | 86% |
| Step 5 (7.0 VDC) | 86% | 82% |
| Step 4 (6.0 VDC) | 82% | 80% |
| Step 3 (5.0 VDC) | 76% | 75% |
| Step 2 (4.0 VDC) | 71% | 72% |
| Step 1 (3.0 VDC) | 67% | 71% |
FAOE SETTINGS - Field Adjustable Output - Energy Focused
Provides energy-focused adjustment of output:
| 0-10 Voltage Dial Setting | % Lumen Output (approximate) | % Input Wattage (approximate) |
|---|---|---|
| Step 8 (Full Output) | 100% | 100% |
| Step 7 (7.5 VDC) | 95% | 93% |
| Step 6 (6.5 VDC) | 85% | 79% |
| Step 5 (5.5 VDC) | 75% | 66% |
| Step 4 (4.5 VDC) | 63% | 53% |
| Step 3 (3.5 VDC) | 51% | 41% |
| Step 2 (2.5 VDC) | 37% | 29% |
| Step 1 (1.5 VDC) | 23% | 17% |
