The RAB SWISH34-2X4/MVS is a 2×4 field-adjustable LED troffer with integrated microwave occupancy sensor, delivering up to 5,509 lumens at 40W and a peak efficacy of 145.0 lm/W at the 30W setting. Wattage is field-selectable at 40W, 35W, or 30W (factory default: 40W); color temperature is field-selectable at 3500K, 4000K, or 5000K (factory default: 4000K). The fixture operates on 120–277V with a constant-current, isolated Class 2 driver and supports 0–10V dimming down to 10%. UL Listed for dry and damp locations. Listed as DLC Premium under DLC 5.1 (DLC ID: S-518PBF). Replaces up to 2-lamp T8 fluorescent fixtures. Rated for 100,000 hours (IES LM-80 + TM-21).

Key Features

• Integrated Microwave Occupancy Sensor (/MVS): Active microwave sensor detects motion through walls and partitions; recommended mounting height 9–12 ft; operating range −22°F to 104°F (−30°C to 40°C); 12VDC.
• Field-Selectable Wattage: Switch between 40W, 35W, and 30W in the field without tools — factory default is 40W.
• Field-Selectable CCT: Choose 3500K, 4000K, or 5000K at installation (factory default: 4000K); color consistency maintained to ANSI C78.377-2017.
• Maximum Lumen Output: Delivers up to 5,509 lumens at 40W / 4000K.
• Peak Efficacy: Achieves 145.0 lm/W at 30W / 4000K.
• CRI: CRI 84–85 across all wattage and CCT combinations.
• Color Uniformity: Meets ANSI C78.377-2017.
• 0–10V Dimming: Dims from 100% down to 10%; compatible with Lightcloud Blue and Lightcloud Enterprise.
• Voltage & Driver: Isolated, Class 2 constant-current driver; 120–277V, 50/60Hz; surge protection L-N 2.5KV / LN-GND 2.5KV.
• Location Rating: UL Listed for dry and damp locations; suitable for direct contact with insulation.
• Cold Weather Start: Rated to −40°C (−40°F).
• Certifications: UL Listed · DLC Premium (S-518PBF) · RoHS-compliant · Suitable for direct insulation contact.
• Rated Life & Warranty: 100,000-hour rated life (IES LM-80 + TM-21); RAB 5-year limited warranty.
• Wattage Equivalency: Replaces up to 2-lamp T8 fluorescent fixtures.

Performance & Light Output

The SWISH34-2X4/MVS shares the optical engine of the SWISH34-2X4 and delivers identical verified output:

At 40W: 5,208 lm (3500K / 130.3 lm/W) · 5,509 lm (4000K / 140.5 lm/W) · 5,387 lm (5000K / 135.1 lm/W)
At 35W: 4,650 lm (3500K / 133.3 lm/W) · 4,875 lm (4000K / 142.8 lm/W) · 4,808 lm (5000K / 138.2 lm/W)
At 30W: 4,140 lm (3500K / 137.5 lm/W) · 4,310 lm (4000K / 145.0 lm/W) · 4,269 lm (5000K / 142.1 lm/W)

CRI: 84–85 across all settings. Peak efficacy: 145.0 lm/W at 30W / 4000K. Rated life: 100,000 hours (IES LM-80 + TM-21).

Smart & Control Features

The /MVS microwave sensor is factory-integrated. Additional control configurations available at order:

• Microwave Sensor (/MVS): Integrated — this model. 9–12 ft mounting height; −22°F to 104°F; 12VDC.
• Lightcloud Blue (/LCBS/MVS): Bluetooth mesh — no gateway required; smartphone or MSR1 remote.
• Lightcloud Enterprise (/LC/MVS): Zigbee mesh with gateway.
• MSR1 Remote (SKU: MSR1): Field adjustment of sensor settings; IP20.
• For PIR sensor version: See SWISH34-2X4/PIR.
• For emergency backup: See SWISH34-2X4/E.

Electrical

Isolated, Class 2 constant-current driver; 120–277V AC, 50/60Hz. Input watts at 40W setting: 39.96W (3500K) · 39.20W (4000K) · 39.87W (5000K). Surge protection: L-N 2.5KV / LN-GND 2.5KV. Cold weather start: −40°C. Green technology: mercury-free, UV-free, RoHS-compliant.

Construction

Sheet metal housing with polycarbonate lens and integrated microwave sensor module. Center basket design for uniform 2×4 light distribution. Suitable for direct contact with insulation. Compatible with standard 2×4 T-grid ceiling openings.

Installation & Mounting

Recesses directly into a standard 2×4 T-grid ceiling. Optional surface mounting kit SMKEZPAN2X4 available separately. MSR1 remote (SKU: MSR1) for field sensor adjustment.

Certifications & Rebates

UL Listed — Dry and damp locations. Suitable for direct contact with insulation.

DLC Premium — DLC ID: S-518PBF. Search S-518PBF at designlights.org for participating utilities and rebate verification.

RoHS Compliant — Mercury-free and UV-free.

Typical Applications

• Large Open Offices & Lobbies: Microwave through-partition detection across wide 2×4 grid bays — auto-dims on departure without separate controls hardware.
• Restrooms & Break Rooms: Active microwave detection through stall dividers and obstructions ensures reliable occupancy response.
• Conference Rooms: High lumen output (5,509 lm) combined with auto-dimming reduces energy waste during unoccupied periods.
• Schools & Healthcare: DLC Premium (S-518PBF) rebates plus integrated occupancy control maximize savings ROI on 2×4 retrofit projects.
• Storage & Utility Areas: Reliable microwave response in large, low-traffic 2×4 zones.
• Retail & Mixed-Use Spaces: Pair with Lightcloud Blue (/LCBS/MVS) for zone-level occupancy coordination across large open-plan grids.

What’s Included

• 1× RAB SWISH34-2X4/MVS LED Troffer with Integrated Microwave Sensor (White)
• Mounting hardware for recessed T-grid installation