... merits of longer usage life, better safety, high illuminance, small consumption, work temperature low, workable voltage range wide, maintenance free. Totally ... Longer usage life ,maintenance-free, security level high ,the work life of the LED light source greater than 50000hours ,24hours ... Voltage (V)Rate power (W)Frequency (Hz)Illumination (lx)Work temperature (°C)LED life(H)Weight (KG)Dimension (MM) ...