Generous Plastic Infrared LED Remote Control 14 keys Robot Vacuum Remote Control

Universal Audio Remote Control With Fourteen Keys For Vacuum Robot / Mini Fan

Our infrared remote control use good quality infrared LED . why ?? The reason is the emission intensity of the infrared LED varies with the emission direction. When the direction angle is zero, the radiation intensity is defined as 100%. When the direction angle is larger, the radiation intensity is relatively reduced. If the emission intensity is taken as half of the direction angle by the optical axis, the value is half of the peak value. This angle is called the direction half value angle. The smaller the angle is, the more sensitive the directivity of the element is. Generally, infrared light emitting diodes are attached with lenses to make their directivity more sensitive

When transmitting infrared to control the corresponding controlled device, the control distance is proportional to the transmitting power. In order to increase the infrared control distance, the infrared LED works in the pulse state, because the effective transmission distance of the pulse light (modulated light) is proportional to the peak current of the pulse, and the emission distance of the infrared light can be increased by increasing the peak IP as far as possible. The way to improve IP is to reduce the duty cycle of the pulse, that is, to compress the pulse width t. Generally, its frequency is below 300kHz