
The WSD-EMS15W27-XX Emergency LED Driver is a 15W battery backup driver with an external lithium battery pack, keeping LED fixtures lit for at least 90 minutes during a power outage. It automatically switches to emergency power when the AC supply is interrupted and returns to normal charging once power is restored. It is UL Listed to UL924 for both factory and field installation and built for indoor dry and damp locations.
Emergency backup lighting for LED fixtures in commercial and industrial interiors where a separate, remotely mounted battery pack is preferred.
| Attribute | Value |
|---|---|
| Brand | ONE SOURCE LIGHT |
| Product Type | Emergency LED Driver with External Battery (WSD-EMS Series) |
| Output Power | 15W |
| Output Voltage | 36-150V DC |
| Input Voltage | 100-347VAC, 50/60Hz; unswitched AC power source required on the same branch circuit as the AC LED driver |
| Electrical | AC input current 100mA max; AC input power rating 7.0W max; connected AC LED driver output cannot exceed 150W or 4A |
| Battery | External lithium battery; 500-cycle rated; charging current 250mA; charging time ≥24 hours; overcharge, over-discharge, and short-circuit protected |
| Emergency Runtime | ≥1.5 hours (90 minutes) |
| Controls | Illuminated test switch with indicator light; red LED indicates charging |
| Construction | Driver case 7.4″ x 1.5″ x 1.14″ (188mm x 38mm x 29mm, mounting center 7.0″); external battery pack connected by lead wires; M12 test switch accessory, 19.69″ (500mm) lead |
| Environment Rating | Dry and damp locations only — not for outdoor use; ambient temperature rating (Li-ion) 5°C to +50°C (41°F to 122°F); not for use in an air-handling fixture; must be used with grounded, UL Listed luminaires |
| Battery Maintenance | Recharge for 24 hours every 6 months during storage per the manufacturer |
| Certifications / Listings | UL Listed (cULus, file E530386), UL924; CSA C22.2 No.141 |
| Warranty | 5 years, limited |
| Catalog Number | Output Power | Input Voltage | Battery Type |
|---|---|---|---|
| WSD-EMS15W27-XX | 15W | 100-347V AC, 50/60Hz | External Lithium (standard temperature range) |
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