... led R7S must be tested under a series of bad condition, including the highest temperature 150°C and the lowest temperature -40°C ... , make sure the quality is very stable. We will provide the customer a legitimate usage manual for the led R7S ... include high-power LED lights, LED tube, LED strip lamp, LED ceiling lamp, LED Bulb, LED spotlights, LED PAR lamps, LED corn lamp, LED candle lamp series ...