Hi Sir/Madam,It is nice to write to you. This is Fadl from Yemen. I would like to buy PIR human sensor lamp holder/ E27 motion sensor.May I know more information about product such as:Supply Voltage,Voltage,Do you have any quality assurance certificates?Please forward any information you have available regarding the questions above with your best prices.Kind RegardsFadlFadl Alaswadi Show More