Ultrasonic HC-SR04 Distance Measuring Transducer Sensor Compatible with Arduino
HC-SR04 consists of ultrasonic transmitter, receiver, and control circuit. When trigged it sends out a series of 40KHz ultrasonic pulses and receives echo from an object. The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the width of a TTL pulse.
Power supply: 5V DC; quiescent current: less than 2mA; effectual angle: less than 15°; distance: 2cm~500cm; resolution: 0.3 cm
Package Content: 5pcs HC-SR04 with a gift of 10 pcs female to male dupont cable
You can download the datasheet from our official website or contact our customer service
【Detects day and night automatically】It can work in daytime and nighttime when it is adjusted on the "sun" position (max LUX value), while on the "moon" position (min), it only works when ambient light is less than 3 LUX.
【Adjustable time-delay】It can be set as you wish (10sec±3sec ~ 7min±2min). When it receives the second induction signals after the first induction, it will re-calculate time once more.
【High-sensitivity】360 degree high-sensitivity PIR motion sensor switch with 6 meters max detection distance.
【PIR motion detector】It detects your movements to switch on/off the light or other device you connected.
【Warranty】12 months warranty, so feel free to contact us if you have any problems in using this sensor switch.