With Enable, EN terminal is equal to "1" when the sensor does not work, equal to "0" when working. Jump on the sensor end cap long after the EN grounding plug (EN long as "0"). To use the EN pin when the jumper cap is removed.
Frequency adjustment potentiometer is used to adjust the carrier frequency of the infrared emission tube, because the integration receiver 38KHZ in particular when the carrier frequency is the most sensitive. The 502 resistor clockwise transferred do (that is, the launch tube at maximum brightness), and then at a white wall tone 103 resistance, has been transferred to the sensing distance is the farthest so far so that the sensor will work in the best state
Working voltage: DC 3.3V-5V
Working current: 20mA
Working temperature: -10degree+50degree
Detection distance : 2-40cm
IO interface: 4 line (-/+/S/EN)
Output signal: TTL Level