Ultrasonic sensors use the characteristics of sound waves to provide a contactless and accurate detection solution for detecting the status and distance of objects. By emitting mechanical sound waves with a high frequency, the sensor receives the sound waves reflected back from the object. By calculating the time or energy between the emitted and received sound waves, the precise distance to the target object is obtained.

model	KJT-U18DC
examination range	20-60mm Best value: 45mm
The scope of work	Paper with a weight of 100-2000g/m2, metal composite plates and films greater than 0.4mm thick; metal plates and adhesive films greater than 0.3mm thick; wafers, PCB circuit boards
LED green light	Indication: Leaflet detected
LED yellow light	Instructions: No target (air)
LED red light	Indication: Double sheet detected
Operating Voltage	12-30V DC
No-load current	≤30mA
Working current	3×200mA
Overload protection	200mA, red light and green light flashing at the same time
Voltage drop	≤2V
response delay	<500μs
Pulse Width	≥100ms
impedance	≥4kΩ
Material	Copper sleeve, nickel plated, plastic fittings, transducer: glass filled epoxy
Protection level	IP67
Connection Type	2m, PVC cable 0.14mm2
ambient temperature	0℃~+60℃(273~333K)
Storage temperature	-40℃~+85℃(233~358K)