The WSD-EMUFO40W347-R Emergency LED Driver is a 40W battery backup driver purpose-built for 0-10V dimmable UFO high bay and linear high bay fixtures. Its distinctive egg-shaped, single-piece housing is a private mold patent design optimized specifically for mounting inside a UFO high bay body. It wires directly into the AC input of the LED driver for simple installation, delivers constant power for a full 90-minute runtime, and includes a wireless remote control option for testing the emergency function without climbing to the fixture. It is UL Listed to UL924 and CSA C22.2 No.141 for both factory and field installation.
Emergency backup power for 0-10V dimmable LED UFO high bay and linear high bay fixtures in warehouses, distribution centers, gymnasiums, and other high-ceiling industrial or commercial interiors.
| Attribute | Value |
|---|---|
| Brand | ONE SOURCE LIGHT |
| Product Type | UFO High Bay Emergency LED Driver (WSD-EMUFO Series) |
| Output Power | 40W |
| Output Voltage | 170V DC |
| Input Voltage | 100-347V AC, 50/60Hz; unswitched AC power source required |
| Electrical | Input current ≤200mA; input power 15W |
| Battery | Built-in Li-ion; charging time ≥24 hours |
| Emergency Runtime | 90 minutes, constant power output |
| Dimming | 0-10V; dimming wires must be connected to the UFO LED driver’s dimming wires — the unit will NOT operate in emergency mode without this connection. Manufacturer recommends emergency output ≥20% of the UFO fixture’s LED driver output. For this 40W model: use with LED fixtures under 300W; when dimmed to minimum, fixture power must be under 35W |
| Controls | Wireless remote control test option (ON = test/emergency mode, OFF = normal mode; red indicator ON = charging, OFF = discharging; must be within 45° of the indicator light; requires 2 AAA batteries, not included) or non-remote-control version |
| Construction | Egg/capsule-shaped single-piece housing (private mold patent design), optimized for mounting inside UFO high bay fixtures; built-in integrated junction box; 273.26mm x Φ142.3mm; weight 3.3kg; maximum mounting height 48.65 ft |
| Protection | Over-voltage, short-circuit, over-load, and open-circuit protection |
| Environment Rating | Ambient temperature 5°C to 50°C (41°F to 122°F). The manufacturer’s spec sheet contains conflicting location language — see notes below; not advertised here as rated for wet locations |
| Certifications / Listings | UL Listed (file E530386), UL924; CSA C22.2 No.141; CEC Title 20 Compliant with BC certification |
| Warranty | 5 years, limited |
| Catalog Number | Output Power | Input Voltage | Output Voltage | Battery Type |
|---|---|---|---|---|
| WSD-EMUFO40W347-R | 40W | 100-347V AC, 50/60Hz | 170V DC | Built-in Li-ion |
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