Delivery Time:2-3 weeks
Certification:ISO, CE, ROHS

Open / Pin 40khz Ultrasonic Transducer / Ultrasonic Proximity Sensor with Transmitter and Receiver

Specifications

NO.	Item	Specification
1	Center frequency	40.0±1.0KHz
2	Sensitivity	-58±4dB
3	Sound Pressure Level	118dB
4	Beam Angle	90° typical
5	Capacitance	1900±20%pF
6	Max. Driving Voltage	40Vp-p
7	Operating temperature	-40～+90℃
8	Storage temperature	-40～+85℃

Drawing(mm)

Ultrasonic sensor application in the field of security alarm 
The ultrasonic sensor is a sensor developed by ultrasonic characteristics. Ultrasound as a means of detection, must produce the ultrasonic wave and receiving ultrasonic. The completion of this function is the ultrasonic sensor device. As the emission part and a receiving part using ultrasonic sensors, transmitters to be detection of regional emission amplitude ultrasonic, ultrasonic receiver to receive the reflected, in the absence of a moving object enters a region detected, the reflected waves is the amplitude . When the activity objects into the detection region, the amplitude of ultrasonic wave reflected unequal, and constantly changing, the receiving circuit detection signal to the control circuit changes respond that drives the alarm.