1. Optical switch.
2. Light detecting portion of remote control.
3. AV instruments such as audio, TV, VCR, CD, MD, etc.
4. Home appliances such as air-conditioner, fan, etc.
5. The other equipments with wireless remote control.
6. CATV set top boxes.
7. Multi-media equipment.
1. High protection ability against EMI. 2. Oval lens to improve the receive angles. 3. Line-up for various center carrier frequencies. 4. High immunity against ambient circuit. 5. TTL and CMOS compatibility.