Quick Details Place of Origin: Guangdong,Website:http://www.df-emergency.com, China (Mainland) Brand Name: Dengfeng Model Number: DF 168B Bulb Type: LED Battery Type: Ni-Cd Ni-MH Lithium Material: Cold Rolled Steel Sheet Usage: Office emergency lights Certification: CE/ROSH/FCC Specifications: 4W 2H Lighting source Power: 4W Emergency time: 1 h /1.5h / 2 h / 3 h Operation temperature: -20--50℃ , 65+20% RH Emergency switch time: ≤ 1S The service life: 30000Hours Warranty: 3 years Charging Time: >24h/48h without breakPackaging & DeliveryPackaging Details:Paper Emergency packs package with single set, 5 sets for 1 carton (below 10kg)Delivery Detail:sample:1-3days, below 100pcs:5-7days,above 1000pcs:7-12daysProduct Description TUV CE Rohs FCC Certified LED Emergency Light Power Kits 1) Power:4W 2) Conversion Efficiency: ≥90% 3) Working Lifetime(Hour): 30000 4) 3 years warranty 5) High quality and Manufacturer PriceLED Emergency Power Pack:4W 2H 100% powerPart No.DF-168BProduct NameLED emergency packBattery capacity6V NiMH, NiCd,  Lithium batteryEmergency Power4WInput voltageAC 90~280V, 50/60HzCharging current90-300mASignallingYesWorking Test buttonYesAutomatic Monthly TestNoAutomatic yearly TestNoDurationcustom-madeBattery protectionYesOperation temperature-20--50℃  , 65+20% RHHighest Surface Temperature60°CBattery6V Rechargeable battery packCharging Time>24h without breakOut Voltage in emergencyDC 40-240VSuitable light sourceLED Panel Light, LED Ceiling Lights,LED Downlight etc.NoteThe battery size is custom-made