The RAB SWISH34-1X4/MVS is a 1×4 field-adjustable LED troffer with integrated microwave occupancy sensor, delivering up to 4,109 lumens at 30W and a peak efficacy of 149.2 lm/W at the 18W setting. Wattage is field-selectable at 30W, 25W, or 18W (factory default: 30W); 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-6GLFQT). 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. Automatically dims or switches off in unoccupied spaces for energy savings without additional controls.
• Field-Selectable Wattage: Switch between 30W, 25W, and 18W in the field without tools — factory default is 30W.
• 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 4,109 lumens at 30W / 5000K.
• Peak Efficacy: Achieves 149.2 lm/W at 18W / 4000K.
• CRI: CRI 85–87 across all wattage and CCT combinations.
• Color Uniformity: Meets ANSI C78.377-2017 for chromaticity of solid-state lighting products.
• 0–10V Dimming: Dims smoothly from 100% down to 10%; compatible with Lightcloud Blue and Lightcloud Enterprise control systems.
• 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) cold weather start.
• Certifications: UL Listed · DLC Premium (S-6GLFQT) · 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 SWISH34-1X4/MVS shares the optical engine of the SWISH34-1X4 and delivers identical verified output:

At 30W: 3,930 lm (3500K / 135.5 lm/W) · 4,104 lm (4000K / 146.3 lm/W) · 4,109 lm (5000K / 140.9 lm/W)
At 25W: 3,447 lm (3500K / 138.1 lm/W) · 3,568 lm (4000K / 147.7 lm/W) · 3,576 lm (5000K / 142.7 lm/W)
At 18W: 2,538 lm (3500K / 141.7 lm/W) · 2,607 lm (4000K / 149.2 lm/W) · 2,639 lm (5000K / 146.6 lm/W)

CRI: 85–87 across all settings. Peak efficacy: 149.2 lm/W at 18W / 4000K. Rated life: 100,000 hours (IES LM-80 + TM-21).

Smart & Control Features

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

• Microwave Sensor (/MVS): Integrated — this model. Recommended mounting height 9–12 ft; −22°F to 104°F operating range; 12VDC.
• Lightcloud Blue (/LCBS/MVS): Add Bluetooth mesh control — no gateway required; smartphone or MSR1 remote adjustment.
• Lightcloud Enterprise (/LC/MVS): Zigbee mesh with gateway for building management integration.
• MSR1 Remote (SKU: MSR1): Multi-sensor remote for field adjustment of sensor sensitivity and time-delay settings; IP20.
• For PIR sensor version: See SWISH34-1X4/PIR.
• For emergency backup: See SWISH34-1X4/E.

Electrical

Isolated, Class 2 constant-current driver; 120–277V AC, 50/60Hz. Input watts at 30W setting: 29.00W (3500K) · 28.06W (4000K) · 29.17W (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 1×4 light distribution. Suitable for direct contact with insulation. Compatible with standard 1×4 T-grid ceiling openings.

Installation & Mounting

Recesses directly into a standard 1×4 T-grid ceiling. Optional surface mounting kit SMKEZPAN1X4 available separately. MSR1 remote (SKU: MSR1) available for field sensor adjustment.

Certifications & Rebates

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

DLC Premium — DLC ID: S-6GLFQT. Search S-6GLFQT at designlights.org for participating utilities and rebate verification.

RoHS Compliant — Mercury-free and UV-free.

Typical Applications

• Private Offices & Corridors: Microwave sensor auto-dims or switches off in unoccupied spaces — delivers occupancy-based energy savings without a separate sensor or controls package.
• Restrooms & Break Rooms: Through-partition detection ensures reliable activation even with partial obstructions or stall dividers.
• Conference Rooms: Reduces standby energy during unoccupied periods; field CCT selection (3500K–5000K) adapts to presentation or collaboration modes.
• Schools & Healthcare: DLC Premium (S-6GLFQT) rebates combined with integrated occupancy control maximize energy savings ROI on retrofit projects.
• Stairwells & Storage Areas: Active microwave detection in enclosed 1×4 grid runs ensures reliable occupancy response in low-traffic spaces.
• Open Offices: For coverage across open-plan grids, pair with Lightcloud Blue (/LCBS/MVS) for coordinated zone-level occupancy control.

What’s Included

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