... receiver and transmitter modules , wireless receiver controller, infrared detector, door sensor, gas and smoke detectors and home anti-theft alarm system ... order quantityFor Service1.Your inquiry can be resposed in 12 hours. 2.All your question can be answered by our well-trained and ... as the sales area, ideas, design etc. can be protected. 5.Delivery by DHL,UPS,EMS or by sea as your requirments.