Body microwave sensor switch, infrared non-body microwave sensor switch is made on the basis of microwave Doppler effect principle (that is, basic radar principle), can be widely used in a similar automatic door control switch, light switches, security systems, corridor, garage , underground parking, and other needs of auto-sensing control sites. This detection method has the following advantages compared with other detection methods: a non-contact detection;, without the influence of temperature, humidity, noise, air, dust, light, suitable for harsh environments; 3, anti-radio interference ability ;, the output power is only 5mW, constitute a hazard to the human body. Simple installation and wiring. This is common on the market Simple microwave sensing controller compared to using a dedicated microprocessor integrator, not only the detection sensitivity and high, wide detection range, and the work is very reliable, very low false alarm rate, in the -35 ~ stable within the temperature range of +65 degrees.